It seems as though app engine is moving away from supporting email first class.
Most email saas providers support recieving email and invoking a webhook, look at mailgun, send grid or similar. They'll all have verification processes to avoid supporting spam, you may have to register a domain and set up some TXT and MX records. Plus you'll want to do this if you care about deliverability anyway -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/e82f2ccc-d91f-4241-b876-cf66086b6279%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
