title: Phabricator not sending emails
body: <p>I've gotten Phabricator running, but I'm not receiving emails from the UI. What I've tried so far:</p>
  <ul>
  <li>Using PHPMailer - I get the test email using <code>./bin/mail send-test</code>, but when I send the user welcome email through the UI, nothing gets sent out</li>
  <li>Using Mailgun - I also get the test email using <code>./bin/mail send-test</code>, and the Mailgun interface shows emails delivered. However no email gets sent when requested through the interface</li>
  <li>I see emails in list-outbound</li>
  </ul>
  <p>At this point I'm thinking Phabricator is using different settings for the send-test vs. the UI. Any pointers?</p>