Hi Jered,
On Sun, Nov 30, 2025 at 1:25 AM Jered Floyd <jered@convivian.com> wrote:
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).
You piqued my curiosity, and I've run a test (since we maintain RFC 8058 implementation at Mailman3.com) to see how Gmail treats messages from a mailing list with regular Mailman headers vs. RFC 8058 headers.
As per my tests, it treats them equally indifferently - when I click the "Move to spam" button, it just moves them without any additional questions, unfortunately. Also, I don't see any smart "Unsubscribe" button in my Gmail UI.
Perhaps this is because I'm not a heavy sender on this mailing list...
On the other hand, Yahoo (I know that friends don't let friends use it) offers an unsubscribe option even without the RFC 8058 headers, and it sends a valid unsubscribe request by email to the mailing list "leave" address when you click it.
However, I'm going to extend my tests to check how Google Postmaster Tools v2 treats traffic from the particular server with and without RFC 8058 headers. Probably the former will be rendered as "healthier".
I'll share the results in this list.
Sincerely, Danil Smirnov
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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