SMTP server with XAMPP?

For this example, I will use PHPMailer.

So first, you have to download the source code of PHPMailer. Only 3 files are necessary :

• PHPMailerAutoload.php
• class.phpmailer.php
• class.smtp.php

Put these 3 files in the same folder. Then create the main script (I called it 'index.php').

Content of index.php :

<?php

//Load PHPMailer dependencies
require_once 'PHPMailerAutoload.php';
require_once 'class.phpmailer.php';
require_once 'class.smtp.php';

/* CONFIGURATION */
$crendentials = array(
    'email'     => 'XXXXXXXX@gmail.com',    //Your GMail adress
    'password'  => 'XXXXXXXX'               //Your GMail password
    );

/* SPECIFIC TO GMAIL SMTP */
$smtp = array(

'host' => 'smtp.gmail.com',
'port' => 587,
'username' => $crendentials['email'],
'password' => $crendentials['password'],
'secure' => 'tls' //SSL or TLS

);

/* TO, SUBJECT, CONTENT */
$to         = ''; //The 'To' field
$subject    = 'This is a test email sent with PHPMailer';
$content    = 'This is the HTML message body <b>in bold!</b>';



$mailer = new PHPMailer();

//SMTP Configuration
$mailer->isSMTP();
$mailer->SMTPAuth   = true; //We need to authenticate
$mailer->Host       = $smtp['host'];
$mailer->Port       = $smtp['port'];
$mailer->Username   = $smtp['username'];
$mailer->Password   = $smtp['password'];
$mailer->SMTPSecure = $smtp['secure']; 

//Now, send mail :
//From - To :
$mailer->From       = $crendentials['email'];
$mailer->FromName   = 'Your Name'; //Optional
$mailer->addAddress($to);  // Add a recipient

//Subject - Body :
$mailer->Subject        = $subject;
$mailer->Body           = $content;
$mailer->isHTML(true); //Mail body contains HTML tags

//Check if mail is sent :
if(!$mailer->send()) {
    echo 'Error sending mail : ' . $mailer->ErrorInfo;
} else {
    echo 'Message sent !';
}

You can also add 'CC', 'BCC' fields etc...

Examples and documentation can be found on Github.

If you need to use another SMTP server, you can modify the values in $smtp.

Note : you may have a problem sending the mail, like 'Warning: stream_socket_enable_crypto(): this stream does not support SSL/crypto'.

In such case, you must enable the OpenSSL extension. Check your phpinfo(), look for the value of 'Loaded Configuration File' (in my case : E:Program Fileswampbinapacheapache2.4.2binphp.ini) and in this file, uncomment the line extension=php_openssl.dll. Then, restart your XAMPP server.

Man, you read single line replies where there are multiple lines.

MULTILINE REPLY:

250-LINE #1 // lines that have - after ### continue on the next
250-LINE #2 // lines that have - after ### continue on the next
250 LINE #3 // last line has space after ###

SINGLELINE REPLIES:

220 LINE #1 // one reply with code 220
250 LINE #2 // another reply with code 250
// no ### code is followed by - as that means: not the last line!

Your commands are out of sync. So fix like this:

if($smtpLog['hello'] = fgets( $smtpConn )){
    // handle multiline reply
    while($smtpLog['hello']{4} !== ' '){
        $smtpLog['hello'] .= PHP_EOL.fgets( $smtpConn );
    }
}

This applies to every response you get but in your case, commands break sync at EHLO.

You probably have a firewall that blocks outgoing TCP packets going to imap.gmail.com on port 993.

Ask your sysadmin to check for outgoing TCP on dport 993 (imaps). Also check if your DNS is resolving imap.gmail.com:

The command:

telnet imap.gmail.com 993

should give you a valid connection. If it doesn't succeed you found the problem.

You may want to install a IMAP server on your development machine so to continue the development offline... you can install "courier imap" package but it's not a very simple task...

If the connection succeded and the command:

openssl s_client -connect imap.gmail.com:993

give you a valid connection, the problem could be that your libc-client doesn't have SSL support compiled in. In this case you cannot use imaps with PHP, and you could use the "stunnel" command to forward clear traffic originating on your local machine going encrypted to gmail IMAP servers.

The command:

stunnel -c -d 127.0.0.1:443 -r imap.gmail.com:993

should do the trick. This way you can connect your PHP script to 127.0.0.1:443:

<?
  $connect = "{localhost:443}INBOX";
?>