php - How to know mail is send and read by user when sending mail using SMTP,PHPmailer -

is know solution below problem

in project, send email client using smtp , php mailer , gmail script. when send mail gmail send mail particular client. passing gmail login , user name valid. mail sending properly. sometime may happen client not receive mail , @ time not able or trace error. there way, when sending mail client , , when client , read @ time got kind of confirmation.

please if have idea , me out.

<?php /** * simple example script using phpmailer exceptions enabled * @package phpmailer * @version $id$ */  require ('../class.phpmailer.php');  try {         $mail = new phpmailer(true); //new instance, exceptions enabled          $body             = "please return read receipt me.";         $body             = preg_replace('/\\\\/','', $body); //strip backslashes          $mail->issmtp();                           // tell class use smtp         $mail->smtpauth   = true;                  // enable smtp authentication         $mail->port       = 25;                    // set smtp server port         $mail->host       = "smtp server ip/domain"; // smtp server         $mail->username   = "email user account";     // smtp server username         $mail->password   = "email user password";            // smtp server password          $mail->issendmail();  // tell class use sendmail          $mail->addreplyto("someone@something.com","someone");          $mail->from       = "someone@something.com";         $mail->fromname   = "someone";          $to = "other@something.com";          $mail->addaddress($to);          $mail->subject  = "first phpmailer message[test read receipt]";          $mail->confirmreadingto = "someone@something.com"; //this command request read receipt. read receipt email send email address.          $mail->altbody    = "please return read receipt me."; // optional, comment out , test         $mail->wordwrap   = 80; // set word wrap          $mail->msghtml($body);          $mail->ishtml(true); // send html          $mail->send();         echo 'message has been sent.'; } catch (phpmailerexception $e) {         echo $e->errormessage(); } ?> 

some modification need done in above script.

1. configure smtp mail server.

2. set correct & name (someone@something.com, someone)

3. set correct address

from

also

1. delivery reports , read receipts in php mail