發(fā)送郵件可以用smtp，也可以用gomail，下面是代碼

1、SMTP

package main

import (
    "fmt"
    "net/smtp"
)

func main() {
mailConn := map[string]string{
        "user": "it@go.com",
        "pass": "password",
        "host": "smtp.go.com",
        "port": "25",
    }
mailTo:="***@gmail.com"

auth := smtp.PlainAuth("", mailConn["user"], mailConn["pass"], mailConn["host"])
err := smtp.SendMail(mailConn["host"]+":" + mailConn["port"], auth, mailConn["user"], mailTo, []byte( "Done"))
if err != nil {
        fmt.Println(err.Error())
    }
}

2、gomail

func SendMail(mailTo []string, subject string, body string) error {
    mailConn := map[string]string{
        "user": "it@go.com",
        "pass": "password",
        "host": "smtp.go.com",
        "port": "25",
    }

    port, _ := strconv.Atoi(mailConn["port"]) //轉(zhuǎn)換端口類型為int

    m := gomail.NewMessage()
    m.SetHeader("From", mailConn["user"]) //這種方式可以添加別名，即“XD Game”， 也可以直接用<code>m.SetHeader("From",mailConn["user"])</code> 讀者可以自行實驗下效果
    m.SetHeader("To", mailTo...)          //發(fā)送給多個用戶
    m.SetHeader("Subject", subject)       //設(shè)置郵件主題
    m.SetBody("text/html", body)          //設(shè)置郵件正文

    d := gomail.Dialer{
        Host:     mailConn["host"],
        Port:     port,
        Username: mailConn["user"],
        Password: mailConn["pass"],
        SSL:      false,
    }

    //d.TLSConfig = &tls.Config{InsecureSkipVerify: true}
    err := d.DialAndSend(m)

    if err != nil {
        fmt.Println(err.Error())
    }

    return err

}