使用dede织梦自带的邮件功能使用和配置方法教程

//邮件发送函数
function sendmail($email, $mailtitle, $mailbody)
{
    global $cfg_sendmail_bysmtp, $cfg_smtp_server, $cfg_smtp_port, $cfg_smtp_usermail, $cfg_smtp_user, $cfg_smtp_password, $cfg_adminemail,$cfg_webname;
    if($cfg_sendmail_bysmtp == 'Y' && !empty($cfg_smtp_server))
    {
        $mailtype = 'HTML';
        require_once(DEDEINC.'/mail.class.php');
        $smtp = new smtp($cfg_smtp_server,$cfg_smtp_port,true,$cfg_smtp_usermail,$cfg_smtp_password);
        $smtp->debug = false;
        if(!$smtp->smtp_sockopen($cfg_smtp_server)){
          ShowMsg('邮件发送失败,请联系管理员','-1');
        exit();
        }
        $smtp->sendmail($email,$cfg_webname,$cfg_smtp_usermail, $mailtitle, $mailbody, $mailtype);
    }else{
        @mail($email, $mailtitle, $mailbody, $headers);
    }
}