As normal civilians go, I know a lot about email.
As mailman admins go, I know very little.

I manage a set of < 10 small email lists, mostly used by residents in an
over-55 community. The biggest list has about 150 subscribers.  Many of
whom use gmail.

Anything I can do to drive up the reliability of such email will be greatly
appreciated.  In particular, I think it would help to implement "one-click
unsubscribe".  Is that something mailman3 will be doing?

Thanks!

On Tue, Feb 4, 2025 at 11:24 PM Jered Floyd <[email protected]> wrote:

>
> I'm having a lot of problems with GMail delivery due to lack of "one-click
> unsubscribe" -- however that is quantified, which is not clear.
>
> In particular, there is an issue with the fact that Google ignores dots in
> email addresses. So I have many (MANY!) subscribers who try to use the
> List-Unsubscribe header target, but because they are subscribed as "
> [email protected]" rather than "[email protected]"
> (which they have since changed their sender to) they get a reject that they
> are not subscribed. These people are also far too unobservant to read the
> footer of every message that reads "You are subscribed as
> [email protected]".
>
> Is there any way to provide personalized List-Unsubscribe header links, or
> have Mailman ignore dots in gmail.com addresses... or... anything? I'm
> finding reported spam percentages in the Google Postmaster Dashboard
> exceeding 0.1%, which causes massive delivery blocking to GMail-based
> subscribers.
>
> While I would gladly ban everyone who uses gmail, that sadly accounts for
> about half of the Internet today and would be incredibly unproductive.
>
> Thanks,
> --Jered
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