title: Google App Engine Python python email not working
body: <p>My application was working ok for almost a year now, but suddenly it can't send emails. There are no exceptions raised, everything seems ok, but the mails are not delivered I've checked the entire mailbox, spam folders and everything. Here is the sending code:</p>
  
  <pre><code>mail.send_mail(sender="nikola825@gmail.com",  #this is my email, I am the admin
                 to=email,
                 subject="Account verification",
                 body=emailContentsTXT)
  </code></pre>
  
  <p>The call returns successfully, no exceptions are thrown. The number of sent emails in the Quotas dashboard gets increased when I try to send the email.</p>