Email is basically asynchronous. You send the message to your SMTP server, and your SMTP server forwards it along, eventually being delivered to the recipients SMTP server. It can potentially fail or be rejected at any number of hops along the way.
Check out the last paragraph of the Mail Overview - Sending Mail section. http://code.google.com/appengine/docs/python/mail/overview.html#Sending_Mail Perhaps you should try to setup the email you send messages from to forward to your app. Robert On Sat, Sep 10, 2011 at 04:29, Tapir <tapir....@gmail.com> wrote: > Seems the mail api doesn't care if a mail receiver is reachable. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appengine@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.