From 72dbf4cbc0d3dfd4f214ef15f6b05e71a0fefe30 Mon Sep 17 00:00:00 2001
From: Sander Hartman <sander@weprovide.com>
Date: Tue, 7 Jan 2020 14:23:09 +0100
Subject: [PATCH 1/4] Add branch for Magento 2.3.3

---
 Mail/Template/TransportBuilder.php | 458 +++++++++++++++++++++++++++--
 README.md                          |  17 +-
 composer.json                      |   8 +-
 etc/di.xml                         |   4 +
 etc/module.xml                     |   4 +-
 5 files changed, 457 insertions(+), 34 deletions(-)
 create mode 100644 etc/di.xml

diff --git a/Mail/Template/TransportBuilder.php b/Mail/Template/TransportBuilder.php
index a303a5e..b3149bc 100644
--- a/Mail/Template/TransportBuilder.php
+++ b/Mail/Template/TransportBuilder.php
@@ -1,36 +1,458 @@
 <?php
+declare(strict_types=1);
+
 namespace WeProvide\MailAttachment\Mail\Template;
 
-use Zend_Mime;
+use Magento\Framework\App\TemplateTypesInterface;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Framework\Exception\MailException;
+use Magento\Framework\Mail\AddressConverter;
+use Magento\Framework\Mail\EmailMessageInterface;
+use Magento\Framework\Mail\EmailMessageInterfaceFactory;
+use Magento\Framework\Mail\Exception\InvalidArgumentException;
+use Magento\Framework\Mail\MessageInterface;
+use Magento\Framework\Mail\MessageInterfaceFactory;
+use Magento\Framework\Mail\MimeInterface;
+use Magento\Framework\Mail\MimeMessageInterfaceFactory;
+use Magento\Framework\Mail\MimePartInterfaceFactory;
+use Magento\Framework\Mail\Template\FactoryInterface;
+use Magento\Framework\Mail\Template\SenderResolverInterface;
+use Magento\Framework\Mail\TemplateInterface;
+use Magento\Framework\Mail\TransportInterface;
+use Magento\Framework\Mail\TransportInterfaceFactory;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\Framework\Phrase;
+use Zend\Mime\Mime;
+use Zend\Mime\PartFactory;
 
 /**
- * Class TransportBuilder
- * @package WeProvide\ServiceForm\Mail\Template
+ * TransportBuilder
+ *
+ * @api
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ * @since 100.0.2
  */
 class TransportBuilder extends \Magento\Framework\Mail\Template\TransportBuilder
 {
+    /**
+     * Template Identifier
+     *
+     * @var string
+     */
+    protected $templateIdentifier;
+
+    /**
+     * Template Model
+     *
+     * @var string
+     */
+    protected $templateModel;
 
     /**
-     * Add Attachment to email
+     * Template Variables
      *
-     * @param $body
-     * @param $mimeType
-     * @param $disposition
-     * @param $encoding
-     * @param null $filename
+     * @var array
+     */
+    protected $templateVars;
+
+    /**
+     * Template Options
      *
-     * @return $this
+     * @var array
+     */
+    protected $templateOptions;
+
+    /**
+     * Mail Transport
+     *
+     * @var TransportInterface
+     */
+    protected $transport;
+
+    /**
+     * Template Factory
+     *
+     * @var FactoryInterface
+     */
+    protected $templateFactory;
+
+    /**
+     * Object Manager
+     *
+     * @var ObjectManagerInterface
+     */
+    protected $objectManager;
+
+    /**
+     * Message
+     *
+     * @var EmailMessageInterface
+     */
+    protected $message;
+
+    /**
+     * Sender resolver
+     *
+     * @var SenderResolverInterface
+     */
+    protected $_senderResolver;
+
+    /**
+     * @var TransportInterfaceFactory
      */
-    public function addAttachment(
-        $body,
-        $mimeType = Zend_Mime::TYPE_OCTETSTREAM,
-        $disposition = Zend_Mime::DISPOSITION_ATTACHMENT,
-        $encoding = Zend_Mime::ENCODING_BASE64,
-        $filename = null
+    protected $mailTransportFactory;
+
+    /**
+     * Param that used for storing all message data until it will be used
+     *
+     * @var array
+     */
+    private $messageData = [];
+
+    /**
+     * @var EmailMessageInterfaceFactory
+     */
+    private $emailMessageInterfaceFactory;
+
+    /**
+     * @var MimeMessageInterfaceFactory
+     */
+    private $mimeMessageInterfaceFactory;
+
+    /**
+     * @var MimePartInterfaceFactory
+     */
+    private $mimePartInterfaceFactory;
+
+    /**
+     * @var AddressConverter|null
+     */
+    private $addressConverter;
+
+    protected $attachments = [];
+
+    protected $partFactory;
+
+    /**
+     * TransportBuilder constructor
+     *
+     * @param FactoryInterface $templateFactory
+     * @param MessageInterface $message
+     * @param SenderResolverInterface $senderResolver
+     * @param ObjectManagerInterface $objectManager
+     * @param TransportInterfaceFactory $mailTransportFactory
+     * @param MessageInterfaceFactory|null $messageFactory
+     * @param EmailMessageInterfaceFactory|null $emailMessageInterfaceFactory
+     * @param MimeMessageInterfaceFactory|null $mimeMessageInterfaceFactory
+     * @param MimePartInterfaceFactory|null $mimePartInterfaceFactory
+     * @param addressConverter|null $addressConverter
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
+     */
+    public function __construct(
+        FactoryInterface $templateFactory,
+        MessageInterface $message,
+        SenderResolverInterface $senderResolver,
+        ObjectManagerInterface $objectManager,
+        TransportInterfaceFactory $mailTransportFactory,
+        MessageInterfaceFactory $messageFactory = null,
+        EmailMessageInterfaceFactory $emailMessageInterfaceFactory = null,
+        MimeMessageInterfaceFactory $mimeMessageInterfaceFactory = null,
+        MimePartInterfaceFactory $mimePartInterfaceFactory = null,
+        AddressConverter $addressConverter = null
     ) {
-        $this->message->createAttachment($body, $mimeType, $disposition, $encoding, $filename);
+        parent::__construct($templateFactory, $message, $senderResolver, $objectManager, $mailTransportFactory, $messageFactory, $emailMessageInterfaceFactory, $mimeMessageInterfaceFactory, $mimePartInterfaceFactory, $addressConverter);
+        $this->templateFactory = $templateFactory;
+        $this->objectManager = $objectManager;
+        $this->_senderResolver = $senderResolver;
+        $this->mailTransportFactory = $mailTransportFactory;
+        $this->emailMessageInterfaceFactory = $emailMessageInterfaceFactory ?: $this->objectManager
+            ->get(EmailMessageInterfaceFactory::class);
+        $this->mimeMessageInterfaceFactory = $mimeMessageInterfaceFactory ?: $this->objectManager
+            ->get(MimeMessageInterfaceFactory::class);
+        $this->mimePartInterfaceFactory = $mimePartInterfaceFactory ?: $this->objectManager
+            ->get(MimePartInterfaceFactory::class);
+        $this->addressConverter = $addressConverter ?: $this->objectManager
+            ->get(AddressConverter::class);
+        $this->partFactory = $objectManager->get(PartFactory::class);
+    }
+
+    /**
+     * Add cc address
+     *
+     * @param array|string $address
+     * @param string $name
+     *
+     * @return $this
+     */
+    public function addCc($address, $name = '')
+    {
+        $this->addAddressByType('cc', $address, $name);
+
+        return $this;
+    }
+
+    /**
+     * Add to address
+     *
+     * @param array|string $address
+     * @param string $name
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function addTo($address, $name = '')
+    {
+        $this->addAddressByType('to', $address, $name);
+
+        return $this;
+    }
+
+    /**
+     * Add bcc address
+     *
+     * @param array|string $address
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function addBcc($address)
+    {
+        $this->addAddressByType('bcc', $address);
+
+        return $this;
+    }
+
+    /**
+     * Set Reply-To Header
+     *
+     * @param string $email
+     * @param string|null $name
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function setReplyTo($email, $name = null)
+    {
+        $this->addAddressByType('replyTo', $email, $name);
 
         return $this;
     }
 
-}
\ No newline at end of file
+    /**
+     * Set mail from address
+     *
+     * @param string|array $from
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     * @see setFromByScope()
+     *
+     * @deprecated 102.0.1 This function sets the from address but does not provide
+     * a way of setting the correct from addresses based on the scope.
+     */
+    public function setFrom($from)
+    {
+        return $this->setFromByScope($from);
+    }
+
+    /**
+     * Set mail from address by scopeId
+     *
+     * @param string|array $from
+     * @param string|int $scopeId
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     * @throws MailException
+     * @since 102.0.1
+     */
+    public function setFromByScope($from, $scopeId = null)
+    {
+        $result = $this->_senderResolver->resolve($from, $scopeId);
+        $this->addAddressByType('from', $result['email'], $result['name']);
+
+        return $this;
+    }
+
+    /**
+     * Set template identifier
+     *
+     * @param string $templateIdentifier
+     *
+     * @return $this
+     */
+    public function setTemplateIdentifier($templateIdentifier)
+    {
+        $this->templateIdentifier = $templateIdentifier;
+
+        return $this;
+    }
+
+    /**
+     * Set template model
+     *
+     * @param string $templateModel
+     *
+     * @return $this
+     */
+    public function setTemplateModel($templateModel)
+    {
+        $this->templateModel = $templateModel;
+        return $this;
+    }
+
+    /**
+     * Set template vars
+     *
+     * @param array $templateVars
+     *
+     * @return $this
+     */
+    public function setTemplateVars($templateVars)
+    {
+        $this->templateVars = $templateVars;
+
+        return $this;
+    }
+
+    /**
+     * Set template options
+     *
+     * @param array $templateOptions
+     * @return $this
+     */
+    public function setTemplateOptions($templateOptions)
+    {
+        $this->templateOptions = $templateOptions;
+
+        return $this;
+    }
+
+    /**
+     * Get mail transport
+     *
+     * @return TransportInterface
+     * @throws LocalizedException
+     */
+    public function getTransport()
+    {
+        try {
+            $this->prepareMessage();
+            $mailTransport = $this->mailTransportFactory->create(['message' => clone $this->message]);
+        } finally {
+            $this->reset();
+        }
+
+        return $mailTransport;
+    }
+
+    /**
+     * Reset object state
+     *
+     * @return $this
+     */
+    protected function reset()
+    {
+        $this->messageData = [];
+        $this->templateIdentifier = null;
+        $this->templateVars = null;
+        $this->templateOptions = null;
+        return $this;
+    }
+
+    /**
+     * Get template
+     *
+     * @return TemplateInterface
+     */
+    protected function getTemplate()
+    {
+        return $this->templateFactory->get($this->templateIdentifier, $this->templateModel)
+            ->setVars($this->templateVars)
+            ->setOptions($this->templateOptions);
+    }
+
+    /**
+     * Prepare message.
+     *
+     * @return $this
+     * @throws LocalizedException if template type is unknown
+     */
+    protected function prepareMessage()
+    {
+        $template = $this->getTemplate();
+        $content = $template->processTemplate();
+        switch ($template->getType()) {
+            case TemplateTypesInterface::TYPE_TEXT:
+                $part['type'] = MimeInterface::TYPE_TEXT;
+                break;
+
+            case TemplateTypesInterface::TYPE_HTML:
+                $part['type'] = MimeInterface::TYPE_HTML;
+                break;
+
+            default:
+                throw new LocalizedException(
+                    new Phrase('Unknown template type')
+                );
+        }
+        $mimePart = $this->mimePartInterfaceFactory->create(['content' => $content]);
+        $parts = count($this->attachments) ? array_merge([$mimePart], $this->attachments) : [$mimePart];
+        $this->messageData['body'] = $this->mimeMessageInterfaceFactory->create(
+            ['parts' => $parts]
+        );
+
+        $this->messageData['subject'] = html_entity_decode(
+            (string)$template->getSubject(),
+            ENT_QUOTES
+        );
+        $this->message = $this->emailMessageInterfaceFactory->create($this->messageData);
+
+        return $this;
+    }
+
+    /**
+     * Handles possible incoming types of email (string or array)
+     *
+     * @param string $addressType
+     * @param string|array $email
+     * @param string|null $name
+     *
+     * @return void
+     * @throws InvalidArgumentException
+     */
+    private function addAddressByType(string $addressType, $email, ?string $name = null): void
+    {
+        if (is_string($email)) {
+            $this->messageData[$addressType][] = $this->addressConverter->convert($email, $name);
+            return;
+        }
+        $convertedAddressArray = $this->addressConverter->convertMany($email);
+        if (isset($this->messageData[$addressType])) {
+            $this->messageData[$addressType] = array_merge(
+                $this->messageData[$addressType],
+                $convertedAddressArray
+            );
+        }
+    }
+
+    /**
+     * @param string|null $content
+     * @param string|null $fileName
+     * @param string|null $fileType
+     * @return TransportBuilder
+     */
+    public function addAttachment(?string $content, ?string $fileName, ?string $fileType)
+    {
+        $attachmentPart = $this->partFactory->create();
+        $attachmentPart->setContent($content)
+            ->setType($fileType)
+            ->setFileName($fileName)
+            ->setDisposition(Mime::DISPOSITION_ATTACHMENT)
+            ->setEncoding(Mime::ENCODING_BASE64);
+        $this->attachments[] = $attachmentPart;
+
+        return $this;
+    }
+}
diff --git a/README.md b/README.md
index bd19cdb..a204f06 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ class Index extends Action
     public function execute()
     {
         // Any buffer
-        $body = '';
+        $content = '';
 
         $transport = $this->transportBuilder->setTemplateIdentifier('example_identifier')
                                             ->setTemplateOptions([
@@ -52,12 +52,7 @@ class Index extends Action
                                                 'email' => 'info@example.com',
                                             ])
                                             ->addTo('example@example.com')
-                                            ->addAttachment($body,
-                                                Zend_Mime::TYPE_OCTETSTREAM,
-                                                Zend_Mime::DISPOSITION_ATTACHMENT,
-                                                Zend_Mime::ENCODING_BASE64,
-                                                'document.pdf'
-                                            );
+                                            ->addAttachment($content, 'document.pdf', 'application/pdf');
         
         $transport = $transport->getTransport();
         $transport->sendMessage();
@@ -70,11 +65,9 @@ class Index extends Action
 ## Api
 
 `public function addAttachment(
-    $body,
-    $mimeType = Zend_Mime::TYPE_OCTETSTREAM,
-    $disposition = Zend_Mime::DISPOSITION_ATTACHMENT,
-    $encoding = Zend_Mime::ENCODING_BASE64,
-    $filename = null
+    $content,
+    $fileName = '',
+    $fileType = ''
 )`
 
 For reference also check [the code](Mail/Template/TransportBuilder.php)
diff --git a/composer.json b/composer.json
index 3a3cbfa..4dd6486 100644
--- a/composer.json
+++ b/composer.json
@@ -4,12 +4,16 @@
     "type": "magento2-module",
     "authors": [
         {
-            "email": "dwayne@weprovide.com",
-            "name": "Dwayne Hanekamp"
+            "email": "sander@weprovide.com",
+            "name": "Sander Hartman"
         }
     ],
     "license": "MIT",
     "minimum-stability": "stable",
+    "require": {
+        "php": "~7.1.3|~7.2.0",
+        "magento/framework": "~102.0.3"
+    },
     "autoload": {
         "psr-4": {
             "WeProvide\\MailAttachment\\": ""
diff --git a/etc/di.xml b/etc/di.xml
new file mode 100644
index 0000000..92d41c8
--- /dev/null
+++ b/etc/di.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <preference for="Magento\Framework\Mail\Template\TransportBuilder" type="WeProvide\MailAttachment\Mail\Template\TransportBuilder" />
+</config>
\ No newline at end of file
diff --git a/etc/module.xml b/etc/module.xml
index 59c5687..0cd87be 100644
--- a/etc/module.xml
+++ b/etc/module.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="WeProvide_MailAttachment" setup_version="1.0.0" />
-</config>
\ No newline at end of file
+    <module name="WeProvide_MailAttachment" setup_version="2.1.0" />
+</config>

From e535d9f472d0ad156958f9fe9e6c10dbd21dd525 Mon Sep 17 00:00:00 2001
From: Sander Hartman <sander@weprovide.com>
Date: Tue, 7 Jan 2020 16:38:20 +0100
Subject: [PATCH 2/4] Remove unneeded properties

---
 .DS_Store                          | Bin 0 -> 6148 bytes
 Mail/Template/TransportBuilder.php | 390 +++++++++++++++++++++++++++--
 README.md                          |  17 +-
 composer.json                      |   8 +-
 etc/di.xml                         |   4 +
 etc/module.xml                     |   4 +-
 6 files changed, 389 insertions(+), 34 deletions(-)
 create mode 100644 .DS_Store
 create mode 100644 etc/di.xml

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..fb3fed3abda71085e5f5a631e060806ef6cb50e0
GIT binary patch
literal 6148
zcmeH~v2MaZ42FNV8IZbU?05?g&^I_CI(Fg(D6k+!VyM{f(fRH3(!h)&^josOvoBVX
zf5^oEY;!$*0V9AF-HEk_nHlo|KlsHN)9LRx9WIy2i?p{6cuF5J+s|!53P=GdAO)m=
z6j+b~d5o_<7W7Pd6e%DDmZ5-u9}3-BldUs89Sku7kORwMT*oXy7B7%B**aOFSxyg@
ztrla5*Q1>*d0kDm&fX5o;luLI=2HyKdONHzp;-+mNC7D@Q{cVlqo4oZ^hfjmtVO95
zkOD8JfDPN-cEgv-v-R%vyuQz>uN$3=%NhRt1TgWV_>&&S{o)I<CR-;fH2nyK3<^@<
HsS4Zx83PiC

literal 0
HcmV?d00001

diff --git a/Mail/Template/TransportBuilder.php b/Mail/Template/TransportBuilder.php
index a303a5e..6e66317 100644
--- a/Mail/Template/TransportBuilder.php
+++ b/Mail/Template/TransportBuilder.php
@@ -1,36 +1,390 @@
 <?php
+declare(strict_types=1);
+
 namespace WeProvide\MailAttachment\Mail\Template;
 
-use Zend_Mime;
+use Magento\Framework\App\TemplateTypesInterface;
+use Magento\Framework\Exception\LocalizedException;
+use Magento\Framework\Exception\MailException;
+use Magento\Framework\Mail\AddressConverter;
+use Magento\Framework\Mail\EmailMessageInterface;
+use Magento\Framework\Mail\EmailMessageInterfaceFactory;
+use Magento\Framework\Mail\Exception\InvalidArgumentException;
+use Magento\Framework\Mail\MessageInterface;
+use Magento\Framework\Mail\MessageInterfaceFactory;
+use Magento\Framework\Mail\MimeInterface;
+use Magento\Framework\Mail\MimeMessageInterfaceFactory;
+use Magento\Framework\Mail\MimePartInterfaceFactory;
+use Magento\Framework\Mail\Template\FactoryInterface;
+use Magento\Framework\Mail\Template\SenderResolverInterface;
+use Magento\Framework\Mail\TemplateInterface;
+use Magento\Framework\Mail\TransportInterface;
+use Magento\Framework\Mail\TransportInterfaceFactory;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\Framework\Phrase;
+use Zend\Mime\Mime;
+use Zend\Mime\PartFactory;
 
 /**
- * Class TransportBuilder
- * @package WeProvide\ServiceForm\Mail\Template
+ * TransportBuilder
+ *
+ * @api
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ * @since 100.0.2
  */
 class TransportBuilder extends \Magento\Framework\Mail\Template\TransportBuilder
 {
+    /**
+     * Param that used for storing all message data until it will be used
+     *
+     * @var array
+     */
+    private $messageData = [];
+
+    /**
+     * @var EmailMessageInterfaceFactory
+     */
+    private $emailMessageInterfaceFactory;
+
+    /**
+     * @var MimeMessageInterfaceFactory
+     */
+    private $mimeMessageInterfaceFactory;
+
+    /**
+     * @var MimePartInterfaceFactory
+     */
+    private $mimePartInterfaceFactory;
+
+    /**
+     * @var AddressConverter|null
+     */
+    private $addressConverter;
+
+    protected $attachments = [];
+
+    protected $partFactory;
 
     /**
-     * Add Attachment to email
+     * TransportBuilder constructor
      *
-     * @param $body
-     * @param $mimeType
-     * @param $disposition
-     * @param $encoding
-     * @param null $filename
+     * @param FactoryInterface $templateFactory
+     * @param MessageInterface $message
+     * @param SenderResolverInterface $senderResolver
+     * @param ObjectManagerInterface $objectManager
+     * @param TransportInterfaceFactory $mailTransportFactory
+     * @param MessageInterfaceFactory|null $messageFactory
+     * @param EmailMessageInterfaceFactory|null $emailMessageInterfaceFactory
+     * @param MimeMessageInterfaceFactory|null $mimeMessageInterfaceFactory
+     * @param MimePartInterfaceFactory|null $mimePartInterfaceFactory
+     * @param addressConverter|null $addressConverter
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     * @SuppressWarnings(PHPMD.ExcessiveParameterList)
+     */
+    public function __construct(
+        FactoryInterface $templateFactory,
+        MessageInterface $message,
+        SenderResolverInterface $senderResolver,
+        ObjectManagerInterface $objectManager,
+        TransportInterfaceFactory $mailTransportFactory,
+        MessageInterfaceFactory $messageFactory = null,
+        EmailMessageInterfaceFactory $emailMessageInterfaceFactory = null,
+        MimeMessageInterfaceFactory $mimeMessageInterfaceFactory = null,
+        MimePartInterfaceFactory $mimePartInterfaceFactory = null,
+        AddressConverter $addressConverter = null
+    ) {
+        parent::__construct($templateFactory, $message, $senderResolver, $objectManager, $mailTransportFactory, $messageFactory, $emailMessageInterfaceFactory, $mimeMessageInterfaceFactory, $mimePartInterfaceFactory, $addressConverter);
+        $this->templateFactory = $templateFactory;
+        $this->objectManager = $objectManager;
+        $this->_senderResolver = $senderResolver;
+        $this->mailTransportFactory = $mailTransportFactory;
+        $this->emailMessageInterfaceFactory = $emailMessageInterfaceFactory ?: $this->objectManager
+            ->get(EmailMessageInterfaceFactory::class);
+        $this->mimeMessageInterfaceFactory = $mimeMessageInterfaceFactory ?: $this->objectManager
+            ->get(MimeMessageInterfaceFactory::class);
+        $this->mimePartInterfaceFactory = $mimePartInterfaceFactory ?: $this->objectManager
+            ->get(MimePartInterfaceFactory::class);
+        $this->addressConverter = $addressConverter ?: $this->objectManager
+            ->get(AddressConverter::class);
+        $this->partFactory = $objectManager->get(PartFactory::class);
+    }
+
+    /**
+     * Add cc address
+     *
+     * @param array|string $address
+     * @param string $name
      *
      * @return $this
      */
-    public function addAttachment(
-        $body,
-        $mimeType = Zend_Mime::TYPE_OCTETSTREAM,
-        $disposition = Zend_Mime::DISPOSITION_ATTACHMENT,
-        $encoding = Zend_Mime::ENCODING_BASE64,
-        $filename = null
-    ) {
-        $this->message->createAttachment($body, $mimeType, $disposition, $encoding, $filename);
+    public function addCc($address, $name = '')
+    {
+        $this->addAddressByType('cc', $address, $name);
+
+        return $this;
+    }
+
+    /**
+     * Add to address
+     *
+     * @param array|string $address
+     * @param string $name
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function addTo($address, $name = '')
+    {
+        $this->addAddressByType('to', $address, $name);
+
+        return $this;
+    }
+
+    /**
+     * Add bcc address
+     *
+     * @param array|string $address
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function addBcc($address)
+    {
+        $this->addAddressByType('bcc', $address);
+
+        return $this;
+    }
+
+    /**
+     * Set Reply-To Header
+     *
+     * @param string $email
+     * @param string|null $name
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     */
+    public function setReplyTo($email, $name = null)
+    {
+        $this->addAddressByType('replyTo', $email, $name);
+
+        return $this;
+    }
+
+    /**
+     * Set mail from address
+     *
+     * @param string|array $from
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     * @see setFromByScope()
+     *
+     * @deprecated 102.0.1 This function sets the from address but does not provide
+     * a way of setting the correct from addresses based on the scope.
+     */
+    public function setFrom($from)
+    {
+        return $this->setFromByScope($from);
+    }
+
+    /**
+     * Set mail from address by scopeId
+     *
+     * @param string|array $from
+     * @param string|int $scopeId
+     *
+     * @return $this
+     * @throws InvalidArgumentException
+     * @throws MailException
+     * @since 102.0.1
+     */
+    public function setFromByScope($from, $scopeId = null)
+    {
+        $result = $this->_senderResolver->resolve($from, $scopeId);
+        $this->addAddressByType('from', $result['email'], $result['name']);
 
         return $this;
     }
 
-}
\ No newline at end of file
+    /**
+     * Set template identifier
+     *
+     * @param string $templateIdentifier
+     *
+     * @return $this
+     */
+    public function setTemplateIdentifier($templateIdentifier)
+    {
+        $this->templateIdentifier = $templateIdentifier;
+
+        return $this;
+    }
+
+    /**
+     * Set template model
+     *
+     * @param string $templateModel
+     *
+     * @return $this
+     */
+    public function setTemplateModel($templateModel)
+    {
+        $this->templateModel = $templateModel;
+        return $this;
+    }
+
+    /**
+     * Set template vars
+     *
+     * @param array $templateVars
+     *
+     * @return $this
+     */
+    public function setTemplateVars($templateVars)
+    {
+        $this->templateVars = $templateVars;
+
+        return $this;
+    }
+
+    /**
+     * Set template options
+     *
+     * @param array $templateOptions
+     * @return $this
+     */
+    public function setTemplateOptions($templateOptions)
+    {
+        $this->templateOptions = $templateOptions;
+
+        return $this;
+    }
+
+    /**
+     * Get mail transport
+     *
+     * @return TransportInterface
+     * @throws LocalizedException
+     */
+    public function getTransport()
+    {
+        try {
+            $this->prepareMessage();
+            $mailTransport = $this->mailTransportFactory->create(['message' => clone $this->message]);
+        } finally {
+            $this->reset();
+        }
+
+        return $mailTransport;
+    }
+
+    /**
+     * Reset object state
+     *
+     * @return $this
+     */
+    protected function reset()
+    {
+        $this->messageData = [];
+        $this->templateIdentifier = null;
+        $this->templateVars = null;
+        $this->templateOptions = null;
+        return $this;
+    }
+
+    /**
+     * Get template
+     *
+     * @return TemplateInterface
+     */
+    protected function getTemplate()
+    {
+        return $this->templateFactory->get($this->templateIdentifier, $this->templateModel)
+            ->setVars($this->templateVars)
+            ->setOptions($this->templateOptions);
+    }
+
+    /**
+     * Prepare message.
+     *
+     * @return $this
+     * @throws LocalizedException if template type is unknown
+     */
+    protected function prepareMessage()
+    {
+        $template = $this->getTemplate();
+        $content = $template->processTemplate();
+        switch ($template->getType()) {
+            case TemplateTypesInterface::TYPE_TEXT:
+                $part['type'] = MimeInterface::TYPE_TEXT;
+                break;
+
+            case TemplateTypesInterface::TYPE_HTML:
+                $part['type'] = MimeInterface::TYPE_HTML;
+                break;
+
+            default:
+                throw new LocalizedException(
+                    new Phrase('Unknown template type')
+                );
+        }
+        $mimePart = $this->mimePartInterfaceFactory->create(['content' => $content]);
+        $parts = count($this->attachments) ? array_merge([$mimePart], $this->attachments) : [$mimePart];
+        $this->messageData['body'] = $this->mimeMessageInterfaceFactory->create(
+            ['parts' => $parts]
+        );
+
+        $this->messageData['subject'] = html_entity_decode(
+            (string)$template->getSubject(),
+            ENT_QUOTES
+        );
+        $this->message = $this->emailMessageInterfaceFactory->create($this->messageData);
+
+        return $this;
+    }
+
+    /**
+     * Handles possible incoming types of email (string or array)
+     *
+     * @param string $addressType
+     * @param string|array $email
+     * @param string|null $name
+     *
+     * @return void
+     * @throws InvalidArgumentException
+     */
+    private function addAddressByType(string $addressType, $email, ?string $name = null): void
+    {
+        if (is_string($email)) {
+            $this->messageData[$addressType][] = $this->addressConverter->convert($email, $name);
+            return;
+        }
+        $convertedAddressArray = $this->addressConverter->convertMany($email);
+        if (isset($this->messageData[$addressType])) {
+            $this->messageData[$addressType] = array_merge(
+                $this->messageData[$addressType],
+                $convertedAddressArray
+            );
+        }
+    }
+
+    /**
+     * @param string|null $content
+     * @param string|null $fileName
+     * @param string|null $fileType
+     * @return TransportBuilder
+     */
+    public function addAttachment(?string $content, ?string $fileName, ?string $fileType)
+    {
+        $attachmentPart = $this->partFactory->create();
+        $attachmentPart->setContent($content)
+            ->setType($fileType)
+            ->setFileName($fileName)
+            ->setDisposition(Mime::DISPOSITION_ATTACHMENT)
+            ->setEncoding(Mime::ENCODING_BASE64);
+        $this->attachments[] = $attachmentPart;
+
+        return $this;
+    }
+}
diff --git a/README.md b/README.md
index bd19cdb..a204f06 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ class Index extends Action
     public function execute()
     {
         // Any buffer
-        $body = '';
+        $content = '';
 
         $transport = $this->transportBuilder->setTemplateIdentifier('example_identifier')
                                             ->setTemplateOptions([
@@ -52,12 +52,7 @@ class Index extends Action
                                                 'email' => 'info@example.com',
                                             ])
                                             ->addTo('example@example.com')
-                                            ->addAttachment($body,
-                                                Zend_Mime::TYPE_OCTETSTREAM,
-                                                Zend_Mime::DISPOSITION_ATTACHMENT,
-                                                Zend_Mime::ENCODING_BASE64,
-                                                'document.pdf'
-                                            );
+                                            ->addAttachment($content, 'document.pdf', 'application/pdf');
         
         $transport = $transport->getTransport();
         $transport->sendMessage();
@@ -70,11 +65,9 @@ class Index extends Action
 ## Api
 
 `public function addAttachment(
-    $body,
-    $mimeType = Zend_Mime::TYPE_OCTETSTREAM,
-    $disposition = Zend_Mime::DISPOSITION_ATTACHMENT,
-    $encoding = Zend_Mime::ENCODING_BASE64,
-    $filename = null
+    $content,
+    $fileName = '',
+    $fileType = ''
 )`
 
 For reference also check [the code](Mail/Template/TransportBuilder.php)
diff --git a/composer.json b/composer.json
index 3a3cbfa..4dd6486 100644
--- a/composer.json
+++ b/composer.json
@@ -4,12 +4,16 @@
     "type": "magento2-module",
     "authors": [
         {
-            "email": "dwayne@weprovide.com",
-            "name": "Dwayne Hanekamp"
+            "email": "sander@weprovide.com",
+            "name": "Sander Hartman"
         }
     ],
     "license": "MIT",
     "minimum-stability": "stable",
+    "require": {
+        "php": "~7.1.3|~7.2.0",
+        "magento/framework": "~102.0.3"
+    },
     "autoload": {
         "psr-4": {
             "WeProvide\\MailAttachment\\": ""
diff --git a/etc/di.xml b/etc/di.xml
new file mode 100644
index 0000000..92d41c8
--- /dev/null
+++ b/etc/di.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <preference for="Magento\Framework\Mail\Template\TransportBuilder" type="WeProvide\MailAttachment\Mail\Template\TransportBuilder" />
+</config>
\ No newline at end of file
diff --git a/etc/module.xml b/etc/module.xml
index 59c5687..0cd87be 100644
--- a/etc/module.xml
+++ b/etc/module.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="WeProvide_MailAttachment" setup_version="1.0.0" />
-</config>
\ No newline at end of file
+    <module name="WeProvide_MailAttachment" setup_version="2.1.0" />
+</config>

From 4f6185e6c5d55e48dbf810d41ba525938384f54c Mon Sep 17 00:00:00 2001
From: Sander Hartman <sander@weprovide.com>
Date: Wed, 8 Jan 2020 08:20:31 +0100
Subject: [PATCH 3/4] Remove unneeded properties

---
 Mail/Template/TransportBuilder.php | 333 ++++-------------------------
 1 file changed, 44 insertions(+), 289 deletions(-)

diff --git a/Mail/Template/TransportBuilder.php b/Mail/Template/TransportBuilder.php
index 8e298db..0c5e11c 100644
--- a/Mail/Template/TransportBuilder.php
+++ b/Mail/Template/TransportBuilder.php
@@ -1,31 +1,25 @@
 <?php
-/**
- * Mail Template Transport Builder
- *
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
 declare(strict_types=1);
 
-namespace Magento\Framework\Mail\Template;
+namespace WeProvide\MailAttachment\Mail\Template;
 
 use Magento\Framework\App\TemplateTypesInterface;
 use Magento\Framework\Exception\LocalizedException;
-use Magento\Framework\Exception\MailException;
-use Magento\Framework\Mail\EmailMessageInterface;
-use Magento\Framework\Mail\EmailMessageInterfaceFactory;
 use Magento\Framework\Mail\AddressConverter;
+use Magento\Framework\Mail\EmailMessageInterfaceFactory;
 use Magento\Framework\Mail\Exception\InvalidArgumentException;
 use Magento\Framework\Mail\MessageInterface;
 use Magento\Framework\Mail\MessageInterfaceFactory;
 use Magento\Framework\Mail\MimeInterface;
 use Magento\Framework\Mail\MimeMessageInterfaceFactory;
 use Magento\Framework\Mail\MimePartInterfaceFactory;
-use Magento\Framework\Mail\TemplateInterface;
-use Magento\Framework\Mail\TransportInterface;
+use Magento\Framework\Mail\Template\FactoryInterface;
+use Magento\Framework\Mail\Template\SenderResolverInterface;
 use Magento\Framework\Mail\TransportInterfaceFactory;
 use Magento\Framework\ObjectManagerInterface;
 use Magento\Framework\Phrase;
+use Zend\Mime\Mime;
+use Zend\Mime\PartFactory;
 
 /**
  * TransportBuilder
@@ -34,106 +28,30 @@
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  * @since 100.0.2
  */
-class TransportBuilder
+class TransportBuilder extends \Magento\Framework\Mail\Template\TransportBuilder
 {
-    /**
-     * Template Identifier
-     *
-     * @var string
-     */
-    protected $templateIdentifier;
-
-    /**
-     * Template Model
-     *
-     * @var string
-     */
-    protected $templateModel;
+    /** @var array */
+    protected $attachments = [];
 
-    /**
-     * Template Variables
-     *
-     * @var array
-     */
-    protected $templateVars;
-
-    /**
-     * Template Options
-     *
-     * @var array
-     */
-    protected $templateOptions;
-
-    /**
-     * Mail Transport
-     *
-     * @var TransportInterface
-     */
-    protected $transport;
+    /** @var mixed */
+    protected $partFactory;
 
-    /**
-     * Template Factory
-     *
-     * @var FactoryInterface
-     */
-    protected $templateFactory;
-
-    /**
-     * Object Manager
-     *
-     * @var ObjectManagerInterface
-     */
-    protected $objectManager;
-
-    /**
-     * Message
-     *
-     * @var EmailMessageInterface
-     */
-    protected $message;
-
-    /**
-     * Sender resolver
-     *
-     * @var SenderResolverInterface
-     */
-    protected $_senderResolver;
-
-    /**
-     * @var TransportInterfaceFactory
-     */
-    protected $mailTransportFactory;
-
-    /**
-     * Param that used for storing all message data until it will be used
-     *
-     * @var array
-     */
+    /** @var array */
     private $messageData = [];
 
-    /**
-     * @var EmailMessageInterfaceFactory
-     */
+    /** @var EmailMessageInterfaceFactory */
     private $emailMessageInterfaceFactory;
 
-    /**
-     * @var MimeMessageInterfaceFactory
-     */
+    /** @var MimeMessageInterfaceFactory */
     private $mimeMessageInterfaceFactory;
 
-    /**
-     * @var MimePartInterfaceFactory
-     */
+    /** @var MimePartInterfaceFactory */
     private $mimePartInterfaceFactory;
 
-    /**
-     * @var AddressConverter|null
-     */
+    /** @var AddressConverter|null */
     private $addressConverter;
 
     /**
-     * TransportBuilder constructor
-     *
      * @param FactoryInterface $templateFactory
      * @param MessageInterface $message
      * @param SenderResolverInterface $senderResolver
@@ -159,188 +77,16 @@ public function __construct(
         MimePartInterfaceFactory $mimePartInterfaceFactory = null,
         AddressConverter $addressConverter = null
     ) {
-        $this->templateFactory = $templateFactory;
-        $this->objectManager = $objectManager;
-        $this->_senderResolver = $senderResolver;
-        $this->mailTransportFactory = $mailTransportFactory;
-        $this->emailMessageInterfaceFactory = $emailMessageInterfaceFactory ?: $this->objectManager
+        parent::__construct($templateFactory, $message, $senderResolver, $objectManager, $mailTransportFactory, $messageFactory, $emailMessageInterfaceFactory, $mimeMessageInterfaceFactory, $mimePartInterfaceFactory, $addressConverter);
+        $this->emailMessageInterfaceFactory = $emailMessageInterfaceFactory ?: $objectManager
             ->get(EmailMessageInterfaceFactory::class);
-        $this->mimeMessageInterfaceFactory = $mimeMessageInterfaceFactory ?: $this->objectManager
+        $this->mimeMessageInterfaceFactory = $mimeMessageInterfaceFactory ?: $objectManager
             ->get(MimeMessageInterfaceFactory::class);
-        $this->mimePartInterfaceFactory = $mimePartInterfaceFactory ?: $this->objectManager
+        $this->mimePartInterfaceFactory = $mimePartInterfaceFactory ?: $objectManager
             ->get(MimePartInterfaceFactory::class);
-        $this->addressConverter = $addressConverter ?: $this->objectManager
+        $this->addressConverter = $addressConverter ?: $objectManager
             ->get(AddressConverter::class);
-    }
-
-    /**
-     * Add cc address
-     *
-     * @param array|string $address
-     * @param string $name
-     *
-     * @return $this
-     */
-    public function addCc($address, $name = '')
-    {
-        $this->addAddressByType('cc', $address, $name);
-
-        return $this;
-    }
-
-    /**
-     * Add to address
-     *
-     * @param array|string $address
-     * @param string $name
-     *
-     * @return $this
-     * @throws InvalidArgumentException
-     */
-    public function addTo($address, $name = '')
-    {
-        $this->addAddressByType('to', $address, $name);
-
-        return $this;
-    }
-
-    /**
-     * Add bcc address
-     *
-     * @param array|string $address
-     *
-     * @return $this
-     * @throws InvalidArgumentException
-     */
-    public function addBcc($address)
-    {
-        $this->addAddressByType('bcc', $address);
-
-        return $this;
-    }
-
-    /**
-     * Set Reply-To Header
-     *
-     * @param string $email
-     * @param string|null $name
-     *
-     * @return $this
-     * @throws InvalidArgumentException
-     */
-    public function setReplyTo($email, $name = null)
-    {
-        $this->addAddressByType('replyTo', $email, $name);
-
-        return $this;
-    }
-
-    /**
-     * Set mail from address
-     *
-     * @param string|array $from
-     *
-     * @return $this
-     * @throws InvalidArgumentException
-     * @see setFromByScope()
-     *
-     * @deprecated 102.0.1 This function sets the from address but does not provide
-     * a way of setting the correct from addresses based on the scope.
-     */
-    public function setFrom($from)
-    {
-        return $this->setFromByScope($from);
-    }
-
-    /**
-     * Set mail from address by scopeId
-     *
-     * @param string|array $from
-     * @param string|int $scopeId
-     *
-     * @return $this
-     * @throws InvalidArgumentException
-     * @throws MailException
-     * @since 102.0.1
-     */
-    public function setFromByScope($from, $scopeId = null)
-    {
-        $result = $this->_senderResolver->resolve($from, $scopeId);
-        $this->addAddressByType('from', $result['email'], $result['name']);
-
-        return $this;
-    }
-
-    /**
-     * Set template identifier
-     *
-     * @param string $templateIdentifier
-     *
-     * @return $this
-     */
-    public function setTemplateIdentifier($templateIdentifier)
-    {
-        $this->templateIdentifier = $templateIdentifier;
-
-        return $this;
-    }
-
-    /**
-     * Set template model
-     *
-     * @param string $templateModel
-     *
-     * @return $this
-     */
-    public function setTemplateModel($templateModel)
-    {
-        $this->templateModel = $templateModel;
-        return $this;
-    }
-
-    /**
-     * Set template vars
-     *
-     * @param array $templateVars
-     *
-     * @return $this
-     */
-    public function setTemplateVars($templateVars)
-    {
-        $this->templateVars = $templateVars;
-
-        return $this;
-    }
-
-    /**
-     * Set template options
-     *
-     * @param array $templateOptions
-     * @return $this
-     */
-    public function setTemplateOptions($templateOptions)
-    {
-        $this->templateOptions = $templateOptions;
-
-        return $this;
-    }
-
-    /**
-     * Get mail transport
-     *
-     * @return TransportInterface
-     * @throws LocalizedException
-     */
-    public function getTransport()
-    {
-        try {
-            $this->prepareMessage();
-            $mailTransport = $this->mailTransportFactory->create(['message' => clone $this->message]);
-        } finally {
-            $this->reset();
-        }
-
-        return $mailTransport;
+        $this->partFactory = $objectManager->get(PartFactory::class);
     }
 
     /**
@@ -354,21 +100,10 @@ protected function reset()
         $this->templateIdentifier = null;
         $this->templateVars = null;
         $this->templateOptions = null;
+        $this->attachments = [];
         return $this;
     }
 
-    /**
-     * Get template
-     *
-     * @return TemplateInterface
-     */
-    protected function getTemplate()
-    {
-        return $this->templateFactory->get($this->templateIdentifier, $this->templateModel)
-            ->setVars($this->templateVars)
-            ->setOptions($this->templateOptions);
-    }
-
     /**
      * Prepare message.
      *
@@ -394,8 +129,9 @@ protected function prepareMessage()
                 );
         }
         $mimePart = $this->mimePartInterfaceFactory->create(['content' => $content]);
+        $parts = count($this->attachments) ? array_merge([$mimePart], $this->attachments) : [$mimePart];
         $this->messageData['body'] = $this->mimeMessageInterfaceFactory->create(
-            ['parts' => [$mimePart]]
+            ['parts' => $parts]
         );
 
         $this->messageData['subject'] = html_entity_decode(
@@ -431,4 +167,23 @@ private function addAddressByType(string $addressType, $email, ?string $name = n
             );
         }
     }
+
+    /**
+     * @param string|null $content
+     * @param string|null $fileName
+     * @param string|null $fileType
+     * @return TransportBuilder
+     */
+    public function addAttachment(?string $content, ?string $fileName, ?string $fileType)
+    {
+        $attachmentPart = $this->partFactory->create();
+        $attachmentPart->setContent($content)
+            ->setType($fileType)
+            ->setFileName($fileName)
+            ->setDisposition(Mime::DISPOSITION_ATTACHMENT)
+            ->setEncoding(Mime::ENCODING_BASE64);
+        $this->attachments[] = $attachmentPart;
+
+        return $this;
+    }
 }

From 7bd628f83b77a35ae22dff9ae154b2479710ebb2 Mon Sep 17 00:00:00 2001
From: Sander Hartman <sander@weprovide.com>
Date: Wed, 8 Jan 2020 08:20:31 +0100
Subject: [PATCH 4/4] Remove unneeded properties

---
 Mail/Template/TransportBuilder.php | 112 +++++++++--------------------
 1 file changed, 34 insertions(+), 78 deletions(-)

diff --git a/Mail/Template/TransportBuilder.php b/Mail/Template/TransportBuilder.php
index 8e298db..6e66317 100644
--- a/Mail/Template/TransportBuilder.php
+++ b/Mail/Template/TransportBuilder.php
@@ -1,31 +1,29 @@
 <?php
-/**
- * Mail Template Transport Builder
- *
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
 declare(strict_types=1);
 
-namespace Magento\Framework\Mail\Template;
+namespace WeProvide\MailAttachment\Mail\Template;
 
 use Magento\Framework\App\TemplateTypesInterface;
 use Magento\Framework\Exception\LocalizedException;
 use Magento\Framework\Exception\MailException;
+use Magento\Framework\Mail\AddressConverter;
 use Magento\Framework\Mail\EmailMessageInterface;
 use Magento\Framework\Mail\EmailMessageInterfaceFactory;
-use Magento\Framework\Mail\AddressConverter;
 use Magento\Framework\Mail\Exception\InvalidArgumentException;
 use Magento\Framework\Mail\MessageInterface;
 use Magento\Framework\Mail\MessageInterfaceFactory;
 use Magento\Framework\Mail\MimeInterface;
 use Magento\Framework\Mail\MimeMessageInterfaceFactory;
 use Magento\Framework\Mail\MimePartInterfaceFactory;
+use Magento\Framework\Mail\Template\FactoryInterface;
+use Magento\Framework\Mail\Template\SenderResolverInterface;
 use Magento\Framework\Mail\TemplateInterface;
 use Magento\Framework\Mail\TransportInterface;
 use Magento\Framework\Mail\TransportInterfaceFactory;
 use Magento\Framework\ObjectManagerInterface;
 use Magento\Framework\Phrase;
+use Zend\Mime\Mime;
+use Zend\Mime\PartFactory;
 
 /**
  * TransportBuilder
@@ -34,76 +32,8 @@
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  * @since 100.0.2
  */
-class TransportBuilder
+class TransportBuilder extends \Magento\Framework\Mail\Template\TransportBuilder
 {
-    /**
-     * Template Identifier
-     *
-     * @var string
-     */
-    protected $templateIdentifier;
-
-    /**
-     * Template Model
-     *
-     * @var string
-     */
-    protected $templateModel;
-
-    /**
-     * Template Variables
-     *
-     * @var array
-     */
-    protected $templateVars;
-
-    /**
-     * Template Options
-     *
-     * @var array
-     */
-    protected $templateOptions;
-
-    /**
-     * Mail Transport
-     *
-     * @var TransportInterface
-     */
-    protected $transport;
-
-    /**
-     * Template Factory
-     *
-     * @var FactoryInterface
-     */
-    protected $templateFactory;
-
-    /**
-     * Object Manager
-     *
-     * @var ObjectManagerInterface
-     */
-    protected $objectManager;
-
-    /**
-     * Message
-     *
-     * @var EmailMessageInterface
-     */
-    protected $message;
-
-    /**
-     * Sender resolver
-     *
-     * @var SenderResolverInterface
-     */
-    protected $_senderResolver;
-
-    /**
-     * @var TransportInterfaceFactory
-     */
-    protected $mailTransportFactory;
-
     /**
      * Param that used for storing all message data until it will be used
      *
@@ -131,6 +61,10 @@ class TransportBuilder
      */
     private $addressConverter;
 
+    protected $attachments = [];
+
+    protected $partFactory;
+
     /**
      * TransportBuilder constructor
      *
@@ -159,6 +93,7 @@ public function __construct(
         MimePartInterfaceFactory $mimePartInterfaceFactory = null,
         AddressConverter $addressConverter = null
     ) {
+        parent::__construct($templateFactory, $message, $senderResolver, $objectManager, $mailTransportFactory, $messageFactory, $emailMessageInterfaceFactory, $mimeMessageInterfaceFactory, $mimePartInterfaceFactory, $addressConverter);
         $this->templateFactory = $templateFactory;
         $this->objectManager = $objectManager;
         $this->_senderResolver = $senderResolver;
@@ -171,6 +106,7 @@ public function __construct(
             ->get(MimePartInterfaceFactory::class);
         $this->addressConverter = $addressConverter ?: $this->objectManager
             ->get(AddressConverter::class);
+        $this->partFactory = $objectManager->get(PartFactory::class);
     }
 
     /**
@@ -394,8 +330,9 @@ protected function prepareMessage()
                 );
         }
         $mimePart = $this->mimePartInterfaceFactory->create(['content' => $content]);
+        $parts = count($this->attachments) ? array_merge([$mimePart], $this->attachments) : [$mimePart];
         $this->messageData['body'] = $this->mimeMessageInterfaceFactory->create(
-            ['parts' => [$mimePart]]
+            ['parts' => $parts]
         );
 
         $this->messageData['subject'] = html_entity_decode(
@@ -431,4 +368,23 @@ private function addAddressByType(string $addressType, $email, ?string $name = n
             );
         }
     }
+
+    /**
+     * @param string|null $content
+     * @param string|null $fileName
+     * @param string|null $fileType
+     * @return TransportBuilder
+     */
+    public function addAttachment(?string $content, ?string $fileName, ?string $fileType)
+    {
+        $attachmentPart = $this->partFactory->create();
+        $attachmentPart->setContent($content)
+            ->setType($fileType)
+            ->setFileName($fileName)
+            ->setDisposition(Mime::DISPOSITION_ATTACHMENT)
+            ->setEncoding(Mime::ENCODING_BASE64);
+        $this->attachments[] = $attachmentPart;
+
+        return $this;
+    }
 }