Add "debug to email" feature in send() function in lib/ezutils/classes/ezmailtransport.php. For example:

if ( $ini->hasVariable( 'MailSettings', 'DebugEmailToEmail' ) &&
( $destination = $ini->variable( 'MailSettings', 'DebugEmailToEmail' ) )
)

{ $original = ''; foreach ( $mail->receiverElements() as $recv) $original .= $recv['email'] . ', '; foreach ( $mail->bccElements() as $recv) $original .= $recv['email'] . ', '; $original = substr($original, 0, -2); $mail->setSubject( '[DebugEmail. Original-Receipient :' . $original . '] ' . $mail->subject() ); $mail->setReceiver( $destination ); $mail->setBCCElements( array() ); }

if ( $ini->hasVariable( 'MailSettings', 'DebugEmailLog' ) &&
( $path = realpath( $ini->variable( 'MailSettings', 'DebugEmailLog' ) ) )
)
{
$fp = @fopen( $path, 'a' );
if ( !$fp )

{ eZDebug::writeError( "Cannot open maillog ($path) for writing.", 'eZMailTransport::send' ); }

else

{ fwrite( $fp, sprintf("[%s] To: %s; Subject: %s\n", date('r'), $mail->receiverEmailText(), $mail->subject() ) ); fclose( $fp ); }

return true;
}