Somewhat in a similar vein (in that it provides an NNTP interface and provides for decentralized distribution of newsgroups/mailing lists) is public-inbox [0] w

Somewhat in a similar vein (in that it provides an NNTP interface and provides for decentralized distribution of newsgroups/mailing lists) is public-inbox [0] which is used by kernel.org for mirroring LKML; it's quite straightforward to get running and has a great technical foundation on git. [0] https://public-inbox.org https://public-inbox.org