Hello Andi B.
What I had noticed on eCSoft/2 is that they include on the new e-mail when they update the page even of old software. I don't think that is bad, but maybe they would have to catalog the news like "Site Updates" and put the old stuff there.
I think that the options that you have are 1) Spam filter 2) deregister from "Warp" and only belonging to "
warp-technical" 3)Just ignoring the email and don't open it if you feel that it does not provides you what you need.
When I created the group.io mailing lists my idea was for [Warp] to get all the news and [Warp-Technical] to replace [eComStation Technical] (since Yahoo sunset all their groups) with all the user help and discussion. But some people like to ask and discuss things on [Warp] and I'm not against it. It seemed that my idea was not organic and thing shaped in a different way.
Regards