Like I recently wrote in response to someone here who was fascinated that mailing lists were “still a thing in 2025”: Please, inform us of an alternative which is: • Non-proprietary • Federated • Archivable • Accessible • Not dependent on a specific company — https://news.ycombinator.com/item?id=43972038 >
Mailing lists aren't federated. Everyone has to email one particular address at one particular domain; whoever controls that email address + domain can censor/block emails. (That's a good thing when you're blocking spam!) If you're OK with the fact that mailing lists are somewhat centralized, there are actually got a ton of great alternatives to pure mailing lists. All popular open-source web forums support email not…
In mail we have so many freedoms. We have become so locked into technology that we have to introduce a term like “federation” to signify the interoperability and freedom of a single component. Mail is federation layered upon federation.
The fact that you can just use a mailings list address as a member of another mailing list gives you even more federation possibilities. All with the simplest of all message exchange protocols.