Hi Danil,
I don't believe that this is the case -- at least, I don't see the "magic unsubscribe" button on Mailman3 list messages in my GMail account. GMail doesn't really have the information necessary to auto-unsubscribe from a mailman list because it's not obvious what the subscribed address is for any given list/message -- this is a problem that RFC 8058 solves, and I touch on one example of how this goes wrong up-thread (in February).
I do frequently send more than 5000 messages/day to GMail on busy lists with many subscribers. It's hard to overstate what a huge percentage of the consumer mailbox market that Google has. From my sample, they own more than 60% of subscribed addresses.
Looking a the Google Postmaster Tools I see upwards of 99% deliveries TempFailed and I have special-cased retries in my MTA to be every 5 minutes to GMail to try and get vaguely timely message deliveries. Google are always mysterious, but the only big red exclamation mark on their dashboard is lack of one-click unsubscribe.
--Jered
----- On Nov 29, 2025, at 3:07 PM, Danil Smirnov via Mailman-users mailman-users@mailman3.org wrote:
H Jered,
On Sat, Nov 29, 2025 at 5:14 PM Jered Floyd <jered@convivian.com> wrote:
Having the headers that make Google/Yahoo/Apple/etc ask "Would you like to unsubscribe from this?" when they hit the "Junk" button will most likely resolve the problem.
As far as I can tell, this already works this way in Gmail even without 1-click unsubscribe headers. Regular Mailman headers seem sufficient for this functionality to work.
Actually, Gmail requires RFC 8058 implementation only if you send more than 5000 emails to Gmail daily, see
https://support.google.com/a/answer/81126?sjid=10190244125288951896-EU#zippy...
Danil
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