Google App Engine Silently Stopped Sending Email 5 Weeks Ago
Hey Folks,The issue reported here is linked to App Engine and Gmail tightening up their spam filters.  The root cause was an increase in organizations sharding out their spam systems to utilize App Engine’s free tier in such a way that is (a) in direct violation of our ToS and (b) making all of our lives suck a bit more (raise your hand if you want spam).  It’s unfortunate that while App Engine is trying to provide a free tier that enables developers to easily use our platform, others see it as an opportunity for exploitation.  Even more unfortunate is that it has a negative effect on legitimate users.  It’s a fine balance that has been highlighted by several users within this thread.Spam filtering is not a perfect science, and we’re constantly tweaking things -- with our customers in mind.  This issue should be limited to new applications where the trust signal might be a bit lower.  Thus existing apps / customers shouldn’t be experiencing issues (which was also highlighted by a few within this thread).  If this isn’t the case email me: cramsdale@google.com.  For those asking, “hey, why am I being penalized for being a new customer?”  See my previous comment about spam filtering not being a perfect science.  Then email me.We’re here and we want to help.-- Chris (Lead PM for App Engine)