golang 使用gomail.v2发送电子邮件

package email

import (
    "errors"
    "gopkg.in/gomail.v2"
)

var dialer *gomail.Dialer

func Reset(host string, port int, username, password string) {
    dialer = gomail.NewDialer(host, port, username, password)
}
func SendText(to, subject, body string) error {
    if dialer == nil {
        return errors.New("invalid dialer")
    }
    message := gomail.NewMessage()
    message.SetHeader("From", dialer.Username)
    message.SetHeader("Subject", subject)
    message.SetBody("text/plain", body)
    err := dialer.DialAndSend(message)
    if err != nil {
        return err
    }
    return nil
}