1<?php 2 3declare(strict_types=1); 4 5/* 6 * This file is part of the TYPO3 CMS project. 7 * 8 * It is free software; you can redistribute it and/or modify it under 9 * the terms of the GNU General Public License, either version 2 10 * of the License, or any later version. 11 * 12 * For the full copyright and license information, please read the 13 * LICENSE.txt file that was distributed with this source code. 14 * 15 * The TYPO3 project - inspiring people to share! 16 */ 17 18namespace TYPO3\CMS\Core\Mail; 19 20use Symfony\Component\Mailer\Transport\TransportInterface; 21 22/** 23 * Used to implement backwards-compatible spooling 24 */ 25interface DelayedTransportInterface extends TransportInterface 26{ 27 /** 28 * Sends messages using the given transport instance 29 * 30 * @param TransportInterface $transport 31 * @return int the number of messages sent 32 */ 33 public function flushQueue(TransportInterface $transport): int; 34} 35