diff --git a/src/Models/MessageCreateOptions.php b/src/Models/MessageCreateOptions.php
index aa44d0b..aeebfb6 100644
--- a/src/Models/MessageCreateOptions.php
+++ b/src/Models/MessageCreateOptions.php
@@ -10,6 +10,12 @@ class MessageCreateOptions
      */
     public $to = null;
 
+    /**
+     * @var string Partially overrides of the message's 'from' address. This **must** be an address ending 
+     * with `YOUR_SERVER.mailosaur.net`, such as `my-emails @a1bcdef2.mailosaur.net`.
+     */
+    public $from = null;
+
     /**
      * @var bool If true, email will be sent upon creation.
      */
@@ -39,6 +45,7 @@ public function __toArray()
     {
         return array(
             'to'  => $this->to,
+            'from'  => $this->from,
             'send'  => $this->send,
             'subject' => $this->subject,
             'text'    => $this->text,
@@ -56,4 +63,4 @@ public function toJsonString()
     {
         return json_encode($this->__toArray());
     }
-}
\ No newline at end of file
+}
diff --git a/src/Models/SearchCriteria.php b/src/Models/SearchCriteria.php
index a87add5..8270ad5 100644
--- a/src/Models/SearchCriteria.php
+++ b/src/Models/SearchCriteria.php
@@ -15,6 +15,21 @@ class SearchCriteria
      */
     public $sentTo = null;
 
+    /**
+     * @var string The full email address to which the target email was sent.
+     */
+    public $to = null;
+
+    /**
+     * @var string The full email address to which the target email was sent.
+     */
+    public $cc = null;
+
+    /**
+     * @var string The full email address to which the target email was sent.
+     */
+    public $bcc = null;
+
     /**
      * @var string The value to seek within the target email's subject line.
      */
@@ -52,4 +67,4 @@ public function toJsonString()
     {
         return json_encode($this->__toArray());
     }
-}
\ No newline at end of file
+}