# Using Different Transports

In case you want to send different e-mails through different connections, you can also pass the transport object directly to `send()` without a prior call to `setDefaultTransport()`. The passed object will override the default transport for the actual `send()` request.

## Using Different Transports

    $mail = new Zend_Mail();
    // build message...
    $tr1 = new Zend_Mail_Transport_Smtp('server@example.com');
    $tr2 = new Zend_Mail_Transport_Smtp('other_server@example.com');
    $mail->send($tr1);
    $mail->send($tr2);
    $mail->send();  // use default again

## Additional transports

Additional transports can be written by implementing `Zend_Mail_Transport_Interface`.