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genedna/email.go

Created July 2, 2014 15:44
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Golang 从腾讯企业邮箱的发送邮件和一个 HTML 模板。
Raw
email.go
package main
import (
"crypto/tls"
"fmt"
"log"
"net"
"net/smtp"
)
func main() {
host := "smtp.exmail.qq.com"
port := 465
email := "xxx"
password := "xxx"
toEmail := "[email protected]"
header := make(map[string]string)
header["From"] = "Dockboard " + "<" + email + ">"
header["To"] = toEmail
header["Subject"] = "Dockboard 帐户激活邮件"
header["Content-Type"] = "text/html; charset=UTF-8"
body := `
<table border="0" width="100%" cellpadding="0" cellspacing="0" bgcolor="#E6E5E7">
<tr>
<td height="50"></td>
</tr><!-- ======= end top header ======= -->
<!-- ======= header ======= -->
<tr>
<td align="center">
<table border="0" align="center" width="590" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" class="container590">
<tr>
<td align="center">
<table border="0" align="center" width="590" cellpadding="0" cellspacing="0" class="container590">
<tr>
<td>
<table border="0" align="left" cellpadding="0" cellspacing="0" width="190" bgcolor="#2C3E50" class="logo">
<tr>
<td height="25" style="font-size: 25px; line-height: 25px;">&nbsp;</td>
</tr>
<tr>
<td align="center">
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td align="center"><a href="" style="display: block; border-style: none !important; border: 0 !important;"><img width="194" height="42" border="0" style="display: block; width: 194px; height: 42px;" src="http://docker.u.qiniudn.com/dockboard_logo_194_42_email.png" alt="dockboard.org" /></a></td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="25" style="font-size: 25px; line-height: 25px;">&nbsp;</td>
</tr>
</table>
<table border="0" align="left" cellpadding="0" cellspacing="0" class="hideforiphone">
<tr>
<td height="20" width="20" style="font-size: 20px; line-height: 20px;">&nbsp;</td>
</tr>
</table>
<table border="0" align="right" cellpadding="0" cellspacing="0" class="date">
<tr>
<td align="center" valign="middle">
<table width="300" border="0" cellpadding="0" cellspacing="0" align="center" class="date-inside">
<tr>
<td height="30" style="font-size: 30px; line-height: 40px;">&nbsp;</td>
</tr>
<tr>
<td align="right" style="color: #959da6; font-size: 16px; font-weight: normal; font-family:'Source Sans Pro' Arial, sans-serif;">Dockboard Hub / Build / CI / CD&nbsp;&nbsp;&nbsp;</td>
</tr>
<tr>
<td height="30" style="font-size: 30px; line-height: 30px;">&nbsp;</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr><!-- ======= end header ======= -->
<tr>
<td height="30" style="font-size: 30px; line-height: 30px;">&nbsp;</td>
</tr>
<!-- ======= Main section ======= -->
<!-- ======= CTA ======= -->
<tr>
<td align="center">
<table border="0" align="center" width="590" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" style="border-collapse:collapse; mso-table-lspace:0pt; mso-table-rspace:0pt;" class="container590">
<tr>
<td height="45" style="font-size: 45px; line-height: 45px;">&nbsp;</td>
</tr>
<tr>
<td align="center" style="color: #222222; font-size: 24px; font-family: 'Ubuntu', Arial, sans-serif; mso-line-height-rule: exactly;" class="cta-header">
<div>
请激活您的 Dockboard 帐户
</div>
</td>
</tr>
<tr>
<td height="25" style="font-size: 25px; line-height: 25px;">&nbsp;</td>
</tr>
<tr>
<td>
<table border="0" align="center" width="490" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" class="container580">
<tr>
<td align="center" style="color: #adb3ba; font-size: 16px; font-weight: 300; font-family: 'Source Sans Pro', Arial, sans-serif; mso-line-height-rule: exactly; line-height: 24px;">
<div style="line-height: 24px;">
感谢你注册 Dockboard 帐户！请点击下面的激活按钮激活帐号并登录到控制台设置个人信息。
</div>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="40" style="font-size: 40px; line-height: 40px;">&nbsp;</td>
</tr>
<tr>
<td align="center"><a href="" style="display: block; width: 140px; height: 40px; border-style: none !important; border: 0 !important;"><img width="140" height="40" border="0" style="display: block; width: 140px; height: 40px;" src="http://docker.u.qiniudn.com/email_active-btn.png" alt="激活帐号" /></a></td>
</tr>
<tr>
<td height="45" style="font-size: 45px; line-height: 45px;">&nbsp;</td>
</tr>
</table>
</td>
</tr><!-- ======= end CTA ======= -->
<tr>
<td height="10" style="font-size: 10px; line-height: 10px;">&nbsp;</td>
</tr>
<!-- ======= footer ======= -->
<tr>
<td align="center">
<table border="0" align="center" width="590" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" class="container590">
<tr>
<td align="center">
<table border="0" align="center" width="560" cellpadding="0" cellspacing="0" class="container580">
<tr>
<td height="20" style="font-size: 20px; line-height: 20px;">&nbsp;</td>
</tr>
<tr>
<td></td>
<td align="center">
<table border="0" align="left" cellpadding="0" cellspacing="0" style="border-collapse:collapse; mso-table-lspace:0pt; mso-table-rspace:0pt;" class="container580">
<tr>
<td align="center" style="color: #adb3ba; font-size: 13px; font-family: 'Source Sans pro', Arial, sans-serif; line-height: 30px;"><span style="color: #222222;">dockboard</span> © Copyright 2014 . All Rights Reserved</td>
</tr>
</table>
<table border="0" width="10" align="left" cellpadding="0" cellspacing="0" style="border-collapse:collapse; mso-table-lspace:0pt; mso-table-rspace:0pt;">
<tr>
<td height="20" width="10" style="font-size: 20px; line-height: 20px;">&nbsp;</td>
</tr>
</table>
<table border="0" align="right" cellpadding="0" cellspacing="0" style="border-collapse:collapse; mso-table-lspace:0pt; mso-table-rspace:0pt;" class="container580">
<tr>
<td align="center" style="color: #adb3ba; font-size: 13px; font-family: 'Source Sans pro', Arial, sans-serif; line-height: 30px;"><a href="" style="color: #adb3ba; text-decoration: none;">Privacy Policy</a>&nbsp;&nbsp;<span style="font-weight: 700; color: #2c3e50;">/</span>&nbsp;&nbsp;<a href="" style="color: #adb3ba; text-decoration: none;">Terms of Use</a>&nbsp;&nbsp;<span style="font-weight: 700; color: #2c3e50;">/</span>&nbsp;&nbsp;<a href="" style="color: #adb3ba; text-decoration: none;">Contact</a></td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="20" style="font-size: 20px; line-height: 20px;">&nbsp;</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td height="30" style="font-size: 30px; line-height: 30px;">&nbsp;</td>
</tr>
<!-- ======= end footer ======= -->
</table>
`
message := ""
for k, v := range header {
message += fmt.Sprintf("%s: %s\r\n", k, v)
}
message += "\r\n" + body
auth := smtp.PlainAuth(
"",
email,
password,
host,
)
err := SendMailUsingTLS(
fmt.Sprintf("%s:%d", host, port),
auth,
email,
[]string{toEmail},
[]byte(message),
)
if err != nil {
panic(err)
}
}
//return a smtp client
func Dial(addr string) (*smtp.Client, error) {
conn, err := tls.Dial("tcp", addr, nil)
if err != nil {
log.Println("Dialing Error:", err)
return nil, err
}
//分解主机端口字符串
host, _, _ := net.SplitHostPort(addr)
return smtp.NewClient(conn, host)
}
//参考net/smtp的func SendMail()
//使用net.Dial连接tls(ssl)端口时,smtp.NewClient()会卡住且不提示err
//len(to)>1时,to[1]开始提示是密送
func SendMailUsingTLS(addr string, auth smtp.Auth, from string,
to []string, msg []byte) (err error) {
//create smtp client
c, err := Dial(addr)
if err != nil {
log.Println("Create smpt client error:", err)
return err
}
defer c.Close()
if auth != nil {
if ok, _ := c.Extension("AUTH"); ok {
if err = c.Auth(auth); err != nil {
log.Println("Error during AUTH", err)
return err
}
}
}
if err = c.Mail(from); err != nil {
return err
}
for _, addr := range to {
if err = c.Rcpt(addr); err != nil {
return err
}
}
w, err := c.Data()
if err != nil {
return err
}
_, err = w.Write(msg)
if err != nil {
return err
}
err = w.Close()
if err != nil {
return err
}
return c.Quit()
}
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