A quick and dirty implementation of the Golang SMTP package used with GMail.

gmailSMTP.go

package tools

import (
  "fmt"
	"net/smtp"
)

var (
	username string = ""
	password string = ""
	host     string = "smtp.gmail.com"
	port     string = "587"
)

func SendMail(to []string, subject string, msg string) error {
	auth := smtp.PlainAuth(
		"",
		username,
		password,
		host,
	)

	address := fmt.Sprintf("%v:%v", host, port)

	//	build our message
	body := []byte("Subject: " + subject + "\r\n\r\n" + msg)

	err := smtp.SendMail(
		address,
		auth,
		username,
		to,
		body,
	)
	if err != nil {
		return err
	}

	return nil
}