<?php
  
  namespace Illuminate\Contracts\Mail;
  
  interface MailQueue
  {
      /**
       * Queue a new e-mail message for sending.
       *
       * @param  \Illuminate\Contracts\Mail\Mailable|string|array  $view
       * @param  string|null  $queue
       * @return mixed
       */
      public function queue($view, $queue = null);
  
      /**
       * Queue a new e-mail message for sending after (n) seconds.
       *
       * @param  \DateTimeInterface|\DateInterval|int  $delay
       * @param  \Illuminate\Contracts\Mail\Mailable|string|array  $view
       * @param  string|null  $queue
       * @return mixed
       */
      public function later($delay, $view, $queue = null);
  }