Here's a perfect example: https://developers.google.com/appengine/docs/python/mail/headers
I was playing with headers just a month back and it all works just fine. What might not work in your case, is that when a real person (with a real email client) responds, the client might just not include your custom headers in the replay. On headers restrictions see this: https://developers.google.com/appengine/docs/python/mail/overview#Sending_Mail_with_Headers On Monday, May 7, 2012 6:44:35 PM UTC+2, Alexey wrote: > > One more time, with feeling. No one ever deal with this problem on > GAE? > > On Apr 30, 8:57 am, Alexey <[email protected]> wrote: > > I have an application that both received and sendsemail. As a > > feature, I want to set "References" SMTP header in order to maintain > > correct logical message grouping byemailclients. It seems that > > while the code encounters no errors in setting the header (confirmed > > with debug output) it never materializes on the client. I can't seem > > to find any documentation regarding "References" SMTP header in GAE. > > I realize it's a non-standard header, but there does not seem to be a > > restriction on which headers we are allowed to set. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/5auz3wslk7oJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
