Here's the short and sweet of it, for the unsubscribe process:
http://dadamailproject.com/d/features-unsubscription_system.pod.html
Part of the simplification of things was that there's only one unsubscription tag, and it's required that it be used. If it's not found, it'll be placed in your message for you.
This has been the behavior of the app for years now. The only difference is that a few different unsubscription links were allowed in past revisions, now only one specific one can be used.
Legitimate mailing lists have legitimate unsubscribe mechanisms (amongst other things), and I've taken a lot of time to make Dada Mail's unsubscription system first class. It's a huge priority. There's no, "don't use the unsubscription system" mode in Dada Mail. Are there cases where it's not needed? Yeah, I can clearly see that there are. Does Dada Mail cater to those cases? No, it doesn't.
Please, if you'd like, open up the discussion to how one could run something I'll label a, "private" mailing list, that doesn't follow all the rules of a, "public" mailing list, but then tell me how I can offer this feature, without having it wide open to abuse, and/or having me somehow being the police force against this abuse. That's the problem I don't have a solution to, that's what I asked for help on, and that's what remains unsolved. I get that, "But you can trust ME" argument, but how can I trust people that don't come up to me, personally?
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