MegaBrutal via Mailman-users writes
Also I created my list as "Announce only",
I ran mailman for donkeys' years for such a lists. Mailman is not a good tool for such lists. It requires its subscribers to verify their address. This is good policy for a discussion list, as you want to handling of subscribers. But this is added work for subscribers that you don't need them to do. The problem comes at signoff time. Folks forget they registered. They need to find their credentials. If they don't have them, they get annoyed and may mark your email as spam. That's one reason I wrote my own tool for such lists. It's called nitpo, which stands for New Item POster. I was funded 5000 euro by the EU to produce it. I worked on it for about one year. It powers the email subscriptions system in my expertise sharing services NEP https://nep.repec.org and bims Biomed News. Here the same items are packaged into potentially overlapping reports. Nipto features individual emails to present the item only once to a subscriber. This was the main reason why I wrote the tool.
-- Written by Thomas Krichel http://openlib.org/home/krichel on his 22208th day.