title: How to send 100,000 emails weekly?
body: <p>How can one send an email to 100,000 users on a weekly basis in PHP? This includes mail to subscribers using the following providers:</p>
  
  <ul>
  <li>AOL</li>
  <li>G-Mail</li>
  <li>Hotmail</li>
  <li>Yahoo</li>
  </ul>
  
  <p>It is important that all e-mail actually be delivered, to the extent that it is possible. Obviously, just sending the mail conventionally would do nothing but create problems.</p>
  
  <p>Is there a library for PHP that makes this simpler? </p>