Please list a few. They might come in handy.
I know of feed2exec (programmable feed reader): https://gitlab.com/anarcat/feed2exec
Debian also has feed2imap, feed2omb (open microblogging) and feed2toot (Mastodon): https://packages.debian.org/search?keywords=feed2
Prior to that I was using imm https://hackage.haskell.org/package/imm-0.3.0.0 Looking at it's github repo it seems to have morphed into a more general-purpose tool https://github.com/k0ral/imm
I also remember looking at https://github.com/sloonz/maildir-feed and its successor https://github.com/sloonz/ua which looks nice and modular, but I couldn't figure out how to compile Go with Nix :(
Prior to that I was using imm https://hackage.haskell.org/package/imm-0.3.0.0 Looking at it's github repo it seems to have morphed into a more general-purpose tool https://github.com/k0ral/imm
I also remember looking at https://github.com/sloonz/maildir-feed and its successor https://github.com/sloonz/ua which looks nice and modular, but I couldn't figure out how to compile Go with Nix :(