It’s obvious enough to me that discourse is better than a mailing list, but not everyone is convinced. Here’s what someone said to my suggestion of having a discourse forum for the Rust programming language:
FYI, I’ve used a Discourse forum, and I’ve found it rather obnoxious.
Much prefer the PHPBB or OSQA approach.
Mailing lists are, IMO, better (e.g., gpg works, attachments work,
direct messaging comes built in).
What would you say to that?