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Re:Gmail having issues by petercooper on Tuesday December 15, 2020 @07:07PM (#25437230)
Yes, most likely! That is a common approach for 'soft bounces' in most list management systems (e.g. MailChimp).

The problem here is Gmail has been throwing out "NoSuchUser" errors which are an instant unsub in most systems because Gmail takes repeated delivery to non-existing addresses into account for deliverability purposes.

I'm extremely paranoid about email hygiene, tiny bounce rates and high delivery rates, so we aggressively unsubscribe troublesome addresses (often to the point of getting reader complaints about it) for many reasons beyond that, however.

Re:Gmail having issues by octoberfranklin on Tuesday December 15, 2020 @08:38PM (#25437981)
> Gmail takes repeated delivery to non-existing addresses into account for deliverability purposes.

I think you mean "reputation purposes"?

If so, wow, that sucks. Their opaque rules have conditioned their counterparties to punish Google as hard as possible for a screwup.

Re:Gmail having issues by MagnumPIG on Wednesday December 16, 2020 @12:47AM (#25439509)
> Their opaque rules have conditioned their counterparties to punish Google as hard as possible for a screwup.

Good for karma, bad for everyone though.

Re:Gmail having issues by petercooper on Wednesday December 16, 2020 @07:39AM (#25441838)
I think you mean "reputation purposes"?

That better describes what I was trying to say, yes. Reputation then affecting deliverability.

Over 80% of our subscribers use Gmail so to say I'm paranoid about maintaining a good record with them is an understatement ;-) Gmail is a huge weak link for us.

Re:Gmail having issues by Jap2-0 on Tuesday December 15, 2020 @07:17PM (#25437319)
Ah, thanks for the explanation.