example.go

package main

// This is an example of the Mail helper, located here: /helpers/mail

import (
	"fmt"
	"os"

	"github.com/sendgrid/sendgrid-go"
	"github.com/sendgrid/sendgrid-go/helpers/mail"
)

// Minimum required to send an email
func helloEmail() []byte {
	address := "test@example.com"
	name := "Example User"
	from := mail.NewEmail(name, address)
	subject := "Hello World from the SendGrid Go Library"
	address = "test@example.com"
	name = "Example User"
	to := mail.NewEmail(name, address)
	content := mail.NewContent("text/plain", "some text here")
	m := mail.NewV3MailInit(from, subject, to, content)
	address = "test2@example.com"
	name = "Example User"
	email := mail.NewEmail(name, address)
	m.Personalizations[0].AddTos(email)
	return mail.GetRequestBody(m)
}

// Fully populated Mail object
func kitchenSink() []byte {
	m := mail.NewV3Mail()
	address := "test@example.com"
	name := "Example User"
	e := mail.NewEmail(name, address)
	m.SetFrom(e)

	m.Subject = "Hello World from the SendGrid Go Library"

	p := mail.NewPersonalization()
	tos := []*mail.Email{
		mail.NewEmail("Example User", "test1@example.com"),
		mail.NewEmail("Example User", "test2@example.com"),
	}
	p.AddTos(tos...)
	ccs := []*mail.Email{
		mail.NewEmail("Example User", "test3@example.com"),
		mail.NewEmail("Example User", "test4@example.com"),
	}
	p.AddCCs(ccs...)
	bccs := []*mail.Email{
		mail.NewEmail("Example User", "test5@example.com"),
		mail.NewEmail("Example User", "test6@example.com"),
	}
	p.AddBCCs(bccs...)
	from := mail.NewEmail("Example Sender", "test7@example.com")
	p.AddFrom(from)
	p.Subject = "Hello World from the Personalized SendGrid Go Library"
	p.SetHeader("X-Test", "test")
	p.SetHeader("X-Mock", "true")
	p.SetSubstitution("%name%", "Example User")
	p.SetSubstitution("%city%", "Denver")
	p.SetCustomArg("user_id", "343")
	p.SetCustomArg("type", "marketing")
	p.SetSendAt(1461356286)
	m.AddPersonalizations(p)

	p2 := mail.NewPersonalization()
	tos2 := []*mail.Email{
		mail.NewEmail("Example User", "test1@example.com"),
		mail.NewEmail("Example User", "test2@example.com"),
	}
	p2.AddTos(tos2...)
	ccs2 := []*mail.Email{
		mail.NewEmail("Example User", "test3@example.com"),
		mail.NewEmail("Example User", "test4@example.com"),
	}
	p2.AddCCs(ccs2...)
	bccs = []*mail.Email{
		mail.NewEmail("Example User", "test5@example.com"),
		mail.NewEmail("Example User", "test6@example.com"),
	}
	p2.AddBCCs(bccs...)
	p2.Subject = "Hello World from the Personalized SendGrid Go Library"
	p2.SetHeader("X-Test", "test")
	p2.SetHeader("X-Mock", "true")
	p2.SetSubstitution("%name%", "Example User")
	p2.SetSubstitution("%city%", "Denver")
	p2.SetCustomArg("user_id", "343")
	p2.SetCustomArg("type", "marketing")
	p2.SetSendAt(1461356286)
	m.AddPersonalizations(p2)

	c := mail.NewContent("text/plain", "some text here")
	m.AddContent(c)

	c = mail.NewContent("text/html", "some html here")
	m.AddContent(c)

	a := mail.NewAttachment()
	a.SetContent("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2NpbmcgZWxpdC4gQ3JhcyBwdW12")
	a.SetType("application/pdf")
	a.SetFilename("balance_001.pdf")
	a.SetDisposition("attachment")
	m.AddAttachment(a)

	a2 := mail.NewAttachment()
	a2.SetContent("BwdW")
	a2.SetType("image/png")
	a2.SetFilename("banner.png")
	a2.SetDisposition("inline")
	// Content-ID header is included when the attachment disposition is set to "inline"
	a2.SetContentID("Banner")
	m.AddAttachment(a2)

	m.SetTemplateID("13b8f94f-bcae-4ec6-b752-70d6cb59f932")

	m.AddSection("%section1%", "Substitution Text for Section 1")
	m.AddSection("%section2%", "Substitution Text for Section 2")

	m.SetHeader("X-Test1", "1")
	m.SetHeader("X-Test2", "2")

	m.AddCategories("May")
	m.AddCategories("2016")

	m.SetCustomArg("campaign", "welcome")
	m.SetCustomArg("weekday", "morning")

	m.SetSendAt(1461356286)

	asm := mail.NewASM()
	asm.SetGroupID(99)
	asm.AddGroupsToDisplay(99)
	m.SetASM(asm)

	// This must be a valid [batch ID](https://sendgrid.com/docs/API_Reference/SMTP_API/scheduling_parameters.html) to work
	// m.SetBatchID("sendgrid_batch_id")

	m.SetIPPoolID("23")

	mailSettings := mail.NewMailSettings()
	bccSettings := mail.NewBCCSetting()
	bccSettings.SetEnable(true)
	bccSettings.SetEmail("test@example.com")
	mailSettings.SetBCC(bccSettings)
	sandBoxMode := mail.NewSetting(true)
	mailSettings.SetSandboxMode(sandBoxMode)
	bypassListManagement := mail.NewSetting(true)
	mailSettings.SetBypassListManagement(bypassListManagement)
	footerSetting := mail.NewFooterSetting()
	footerSetting.SetText("Footer Text")
	footerSetting.SetEnable(true)
	footerSetting.SetHTML("<html><body>Footer Text</body></html>")
	mailSettings.SetFooter(footerSetting)
	spamCheckSetting := mail.NewSpamCheckSetting()
	spamCheckSetting.SetEnable(true)
	spamCheckSetting.SetSpamThreshold(1)
	spamCheckSetting.SetPostToURL("https://spamcatcher.sendgrid.com")
	mailSettings.SetSpamCheckSettings(spamCheckSetting)
	m.SetMailSettings(mailSettings)

	trackingSettings := mail.NewTrackingSettings()
	clickTrackingSettings := mail.NewClickTrackingSetting()
	clickTrackingSettings.SetEnable(true)
	clickTrackingSettings.SetEnableText(true)
	trackingSettings.SetClickTracking(clickTrackingSettings)
	openTrackingSetting := mail.NewOpenTrackingSetting()
	openTrackingSetting.SetEnable(true)
	openTrackingSetting.SetSubstitutionTag("Optional tag to replace with the open image in the body of the message")
	trackingSettings.SetOpenTracking(openTrackingSetting)
	subscriptionTrackingSetting := mail.NewSubscriptionTrackingSetting()
	subscriptionTrackingSetting.SetEnable(true)
	subscriptionTrackingSetting.SetText("text to insert into the text/plain portion of the message")
	subscriptionTrackingSetting.SetHTML("<html><body>html to insert into the text/html portion of the message</body></html>")
	subscriptionTrackingSetting.SetSubstitutionTag("Optional tag to replace with the open image in the body of the message")
	trackingSettings.SetSubscriptionTracking(subscriptionTrackingSetting)
	googleAnalyticsSetting := mail.NewGaSetting()
	googleAnalyticsSetting.SetEnable(true)
	googleAnalyticsSetting.SetCampaignSource("some source")
	googleAnalyticsSetting.SetCampaignTerm("some term")
	googleAnalyticsSetting.SetCampaignContent("some content")
	googleAnalyticsSetting.SetCampaignName("some name")
	googleAnalyticsSetting.SetCampaignMedium("some medium")
	trackingSettings.SetGoogleAnalytics(googleAnalyticsSetting)
	m.SetTrackingSettings(trackingSettings)

	replyToEmail := mail.NewEmail("Example User", "test@example.com")
	m.SetReplyTo(replyToEmail)

	return mail.GetRequestBody(m)
}

// Email utilizing dynamic transactional templates
// Note: you must customize subject line of the dynamic template itself
// Note: you may not use substitutions with dynamic templates
func dynamicTemplateEmail() []byte {
	m := mail.NewV3Mail()

	address := "test@example.com"
	name := "Example User"
	e := mail.NewEmail(name, address)
	m.SetFrom(e)

	m.SetTemplateID("d-c6dcf1f72bdd4beeb15a9aa6c72fcd2c")

	p := mail.NewPersonalization()
	tos := []*mail.Email{
		mail.NewEmail("Example User", "test1@example.com"),
		mail.NewEmail("Example User", "test2@example.com"),
	}
	p.AddTos(tos...)

	p.SetDynamicTemplateData("receipt", "true")
	p.SetDynamicTemplateData("total", "$ 239.85")

	items := []struct {
		text  string
		image string
		price string
	}{
		{
			"New Line Sneakers",
			"https://marketing-image-production.s3.amazonaws.com/uploads/8dda1131320a6d978b515cc04ed479df259a458d5d45d58b6b381cae0bf9588113e80ef912f69e8c4cc1ef1a0297e8eefdb7b270064cc046b79a44e21b811802.png",
			"$ 79.95",
		},
		{
			"Old Line Sneakers",
			"https://marketing-image-production.s3.amazonaws.com/uploads/3629f54390ead663d4eb7c53702e492de63299d7c5f7239efdc693b09b9b28c82c924225dcd8dcb65732d5ca7b7b753c5f17e056405bbd4596e4e63a96ae5018.png",
			"$ 89.95",
		},
		{
			"Blue Line Sneakers",
			"https://marketing-image-production.s3.amazonaws.com/uploads/00731ed18eff0ad5da890d876c456c3124a4e44cb48196533e9b95fb2b959b7194c2dc7637b788341d1ff4f88d1dc88e23f7e3704726d313c57f350911dd2bd0.png",
			"$ 99.95",
		},
	}

	var itemList []map[string]string
	var item map[string]string
	for _, v := range items {
		item = make(map[string]string)
		item["text"] = v.text
		item["image"] = v.image
		item["price"] = v.price
		itemList = append(itemList, item)
	}
	p.SetDynamicTemplateData("items", itemList)

	p.SetDynamicTemplateData("name", "Sample Name")
	p.SetDynamicTemplateData("address01", "1234 Fake St.")
	p.SetDynamicTemplateData("address02", "Apt. 123")
	p.SetDynamicTemplateData("city", "Place")
	p.SetDynamicTemplateData("state", "CO")
	p.SetDynamicTemplateData("zip", "80202")

	m.AddPersonalizations(p)
	return mail.GetRequestBody(m)
}

func sendHelloEmail() {
	request := sendgrid.GetRequest(os.Getenv("YOUR_SENDGRID_API_KEY"), "/v3/mail/send", "https://api.sendgrid.com")
	request.Method = "POST"
	var Body = helloEmail()
	request.Body = Body
	response, err := sendgrid.API(request)
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println(response.StatusCode)
		fmt.Println(response.Body)
		fmt.Println(response.Headers)
	}
}

func sendKitchenSink() {
	request := sendgrid.GetRequest(os.Getenv("YOUR_SENDGRID_API_KEY"), "/v3/mail/send", "https://api.sendgrid.com")
	request.Method = "POST"
	var Body = kitchenSink()
	request.Body = Body
	response, err := sendgrid.API(request)
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println(response.StatusCode)
		fmt.Println(response.Body)
		fmt.Println(response.Headers)
	}
}

func sendDynamicTemplateEmail() {
	request := sendgrid.GetRequest(os.Getenv("SENDGRID_API_KEY"), "/v3/mail/send", "https://api.sendgrid.com")
	request.Method = "POST"
	var Body = dynamicTemplateEmail()
	request.Body = Body
	response, err := sendgrid.API(request)
	if err != nil {
		fmt.Println(err)
	} else {
		fmt.Println(response.StatusCode)
		fmt.Println(response.Body)
		fmt.Println(response.Headers)
	}
}

func main() {
	sendHelloEmail()
	sendKitchenSink()
	sendDynamicTemplateEmail()
}