I see that I can comment on a post from an external account, and I also see that I can even make an external account a moderator in a community I administer. The question is, how can an external account create a post in a community it is subscribed to? Does that account have to create an account in the lemmy instance and login first?
ActivityPub is pretty broad so “group support” isn’t really sufficient, in the same way that
Note
support doesn’t automatically make your implementation compatible with miskey, pleroma, or mastodon. Two different implementations could send messages of different types or address them in different ways.