Gomail

Introduction

Gomail is a very simple and powerful package to send emails.

It requires Go 1.3 or newer.

Features

• Dead-simple API
• Highly flexible
• Backward compatibility promise
• Supports HTML and text templates
• Attachments
• Embedded images
• SSL/TLS support
• Automatic encoding of special characters
• Well-documented
• High test coverage

Documentation

https://godoc.org/gopkg.in/gomail.v1

Download

go get gopkg.in/gomail.v1

Example

package main

import (
	"gopkg.in/gomail.v1"
)

func main() {
	msg := gomail.NewMessage()
	msg.SetHeader("From", "alex@example.com")
	msg.SetHeader("To", "bob@example.com", "cora@example.com")
	msg.SetAddressHeader("Cc", "dan@example.com", "Dan")
	msg.SetHeader("Subject", "Hello!")
	msg.SetBody("text/html", "Hello <b>Bob</b> and <i>Cora</i>!")

	f, err := gomail.OpenFile("/home/Alex/lolcat.jpg")
	if err != nil {
		panic(err)
	}
	msg.Attach(f)

	// Send the email to Bob, Cora and Dan
	mailer := gomail.NewMailer("smtp.example.com", "user", "123456", 587)
	if err := mailer.Send(msg); err != nil {
		panic(err)
	}
}

FAQ

x509: certificate signed by unknown authority

If you get this error it means the certificate used by the SMTP server is not considered valid by the client running Gomail. As a quick workaround you can bypass the verification of the server's certificate chain and host name by using SetTLSConfig:

mailer := gomail.NewMailer("smtp.example.com", "user", "123456", 587, gomail.SetTLSConfig(&tls.Config{InsecureSkipVerify: true}))

Note, however, that this is insecure and should not be used in production.

504 5.7.4 Unrecognized authentication type

If you get this error, you should try using the LOGIN authentication mechanism:

addr := "smtp.example.com:587"
auth := gomail.LoginAuth("username", "password", "smtp.example.com")
mailer := gomail.NewCustomMailer(addr, auth)

See issue #16.

Contact

You are more than welcome to open issues and send pull requests if you find a bug or need a new feature.

You can also ask questions on the Gomail thread in the Go mailing-list or via Twitter @alexandrecesaro.