一、安装 PHPMailer扩展
二、获取谷歌邮箱应用程序码
参考下面官方文档
https://support.google.com/accounts/answer/185833
三、php代码
/** * todo 谷歌账号 系统发邮件 * @param array $tomail 接收邮件者邮箱 * @param string $subject 邮件主题 * @param string $body 邮件内容 * @param string $attachment 附件列表 * @return boolean */ function send_gmail($toMail, $subject = '', $body = '', $attachment = null) { $mail = new \PHPMailer\PHPMailer\PHPMailer(); //实例化PHPMailer对象 $mail->IsSMTP(); $mail->CharSet = "UTF-8"; $mail->Encoding = 'base64'; $mail->SMTPDebug = 0; //是否调试 $mail->SMTPAuth = true; $mail->Host = 'ssl://smtp.gmail.com:465'; //host $mail->Port = 25; //端口 $mail->Username = ""; //发件人邮箱 $mail->Password = ""; //发件人专用密码 $mail->SetFrom("","Content System"); //发件人邮箱和名称 $mail->Subject = $subject; //标题 $mail->Body = $body; //内容 $mail->IsHTML(true); //是否启用html foreach ($toMail as $key => $val){ $mail->AddAddress($val, $key); } return $mail->Send() ? true : $mail->ErrorInfo; }