Go 發送郵件

1. 安裝依賴包

go get github.com/go-gomail/gomail

2. 示例代碼

email.go

package email

import (
	"log"

	"github.com/go-gomail/gomail"
)

type EmailInfo struct {
	ServerHost string // ServerHost 郵箱服務器地址，如騰訊企業郵箱為smtp.exmail.qq.com
	ServerPort int    // ServerPort 郵箱服務器端口，如騰訊企業郵箱為465

	FromEmail  string // FromEmail　發件人郵箱地址
	FromPasswd string //發件人郵箱密碼（注意，這里是明文形式)

	Recipient []string //收件人郵箱
	CC        []string //抄送
}

var emailMessage *gomail.Message

/**
 * @Author: dcj
 * @Date: 2020-04-02 15:45:55
 * @Description: 發送郵件
 * @Param : subject[主題]、body[內容]、emailInfo[發郵箱需要的信息(參考EmailInfo)]
 * @Return:
 */
func SendEmail(subject, body string, emailInfo *EmailInfo) {
	if len(emailInfo.Recipient) == 0 {
		log.Print("收件人列表為空")
		return
	}

	emailMessage = gomail.NewMessage()
	//設置收件人
	emailMessage.SetHeader("To", emailInfo.Recipient...)
	//設置抄送列表
	if len(emailInfo.CC) != 0 {
		emailMessage.SetHeader("Cc", emailInfo.CC...)
	}
	// 第三個參數為發件人別名，如"dcj"，可以為空（此時則為郵箱名稱）
	emailMessage.SetAddressHeader("From", emailInfo.FromEmail, "dcj")

	//主題
	emailMessage.SetHeader("Subject", subject)

	//正文
	emailMessage.SetBody("text/html", body)

	d := gomail.NewPlainDialer(emailInfo.ServerHost, emailInfo.ServerPort,
		emailInfo.FromEmail, emailInfo.FromPasswd)
	err := d.DialAndSend(emailMessage)
	if err != nil {
		log.Println("發送郵件失敗： ", err)
	} else {
		log.Println("已成功發送郵件到指定郵箱")
	}
}

3. 測試

email_test.go

/*
 * @Author: dcj
 * @Date: 2020-04-02 12:39:08
 * @LastEditTime: 2020-04-02 16:06:40
 * @Description: 發送郵件功能測試
 */
package email

import "testing"

func TestSendEmail(t *testing.T) {
	reclist := []string{"[e-mail]"}  //收件人郵箱地址

	info := &EmailInfo{
		"smtp.163.com",
		25,
		"[e-mail]",     //發件人郵箱地址
		"sciuusqoaqqfbfdd",
		reclist,
		nil,
	}

	SendEmail("網頁測試信息", "<h1>測試信息：</h1><p>您收到一條測試信息</p>", info)
}