Re: How to unsubscribe

b) go to https://https://dovecot.org/mailman/listinfo/dovecot and click unsubscribe, don't change your delivery options to notmail.

That's not at all clear (quite apart from the double protocol prefix). A lot of the potential audience of this list "know" how Mailman works, so why have you broken that knowledge by delivering to those who have disabled mail delivery?