Gomail is a very simple and powerful package to send emails.
It requires Go 1.3 or newer.
https://godoc.org/gopkg.in/gomail.v1
go get gopkg.in/gomail.v1
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) } }
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.
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.
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.