I'm not sure if this is your issue, but i recently had a similar problem that was caused by a quota "Rate Limit" issue. I had not exceeded my recipients quota, but appengine limits the RATE at which you can send emails to 8/min for non billable apps and 5,100 recipients/minute for billable: http://code.google.com/appengine/docs/quotas.html#Mail
I solved this issue by utilizing a Task queue to limit the rate of outgoing mail. On Sep 28, 2:30 am, Bob <[email protected]> wrote: > Hi, yesterday we sent several email messages (about 12 thousend) as > part of an email newsletter campaign. Every message was sent using the > Python API (google.appengine.api.mail). No exception was raised and > the quota wasn't exceeded. Unfortunately only some messages were > actually delivered (about 5% compared to other newsletter campaigns we > sent) to the recipients. This email address list also contains some of > our own email addresses but none of them did received a message. We > are sending this kind of newsletter (>50000 recipients) every few > weeks - without any problems. > > Is there is problem with the Mail service? > Does anyone else encountered problems like this? > > Thanks, > Bob -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. 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.
