If your only options for interacting with a technical, sysadmin-/developer-focused project's community are these, which would you go with?

Boosts appreciated 🔄

1: an XMPP MUC that requires you to have an account on some XMPP server

2: an IRC channel that requires enough knowledge of IRC to join the channel

3: a mailing list that requires an email account and rejects HTML email

4: a ticket tracker that you can interact with from either your email address (rejects HTML email) or from the web UI but the web UI maybe requires creating a new account

5: none of the above (just don't interact with the community)