client.php

<?php

/**
 * @author Charles-Edouard Coste
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License
 */

include_once 'ezc/Base/ezc_bootstrap.php';

$soap_request = <<<EOD
<?xml version="1.0"?>
<soap:Envelope
xmlns:soap="http://www.w3.org/2001/12/soap-envelope"
soap:encodingStyle="http://www.w3.org/2001/12/soap-encoding">

<soap:Body xmlns:m="http://www.example.org/stock">
  <m:GetStockPrice>
    <m:StockName>IBM</m:StockName>
  </m:GetStockPrice>
</soap:Body>

</soap:Envelope>
EOD;


$mail = new ezcMail();

$mail->from = new ezcMailAddress( 'cc@synap.fr', 'Me' );
$mail->addTo( new ezcMailAddress( 'robot@synap.fr', 'Hal' ) );

$mail->subject = "Give me the stock price of IBM";

// We create a plain text mail part for humans
$textPart = new ezcMailText( "Hello\n=======\n\nThis mail is a SOAP request. For robot eyes only." );

// We add a text/xml mail part for robots
$xmlPart = new ezcMailText($soap_request);
$xmlPart->subType = 'xml';

// Merging the two parts
$mail->body = new ezcMailMultipartAlternative( $textPart, $xmlPart );

$transport = new ezcMailSmtpTransport('smtp.xxx.xx');
$transport->send( $mail );

server.php

<?php

/**
 * @author Charles-Edouard Coste
 * @license http://www.gnu.org/licenses/gpl.html GNU General Public License
 */

require 'ezc/Base/ezc_bootstrap.php';

$server = new SoapServer('services.wsdl');

$options = new ezcMailImapTransportOptions();
$options->ssl = true;

$imap = new ezcMailImapTransport( "imap.xxx.xxx");
$imap->authenticate( "username", "password");
$imap->selectMailbox( 'Inbox' );

$set = $imap->fetchAll();

$parser = new ezcMailParser();
$mail = $parser->parseMail($set);

for ( $i = 0; $i < count( $mail ); $i++ )
{
    $parts = $mail[$i]->fetchParts();

    foreach ( $parts as $part )
    {
        if ( ( $part instanceof ezcMailText ) && $part->subType == 'xml' ) )
        {
          ob_start();
          $server->handle($part->text);
          $response = ob_get_flush();

          // send $response in a mail, like in client.php
          // ...
        }
    }
}