The headers when you send from GAE are completely different. In fact, in some
email readers, some of the headers are shown that really make GAE emails look
like spam to humans, as well.
I haven't tried it, but I've heard that if you want reliable, non-spammy
emails, you really cannot just use G
I deployed a google app engine application that send emails on behalf of a
google apps account that is set up for my (non google) domain. Everything
is configured in the right way; I successfully coupled google apps to my
domain (added google mx records to dns), set up dkim and verified this and
