Hi Vik, technical details aside, keep in mind that the spam filter settings on App Engine can be pretty strict. We have been sending mails for 18 months now, increasing the number gradually, and we also used DKIM signing. Still, suddenly some time last week our mails stopped getting sent. From all I can tell some Google mechanism decided that we're a spammer. We have inquired with Google instantly, but of course the GAE customer service is poor as always and never got back to us. So we switched to an external email provider now (mailgun, but there are dozens out there), and I'm quite happy with that, since tracking of emails is a lot more convenient too. It's not free though.
Long story short, if you all of a sudden send 10k mails, be prepared to get filtered by Google because they think you're a spammer. Make sure to spread the load, and track what you have sent already, so you know what you'd need to resend if push comes to shove. Cheers, Per On Saturday, July 7, 2012 7:19:12 PM UTC+2, Vivek Kumar wrote: > > Hello > > We have around 10000 registered users with us who are blood donors. We > want to send them periodic emails like every month to remind them or their > account status etc. > Obviously, a single request cannot process so many emails. > > So, what is the suggested way to handle this use case without hitting > request time limits etc on app engine? > > our app is in GAE for java > > Vik > -- 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/-/CZHqGIOGAAUJ. 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.
