If email is too high-effort, there's a chat thing at https://ehlab.zulipchat.com.
At some point we want to move to hosted? I think? w/ LDAP or something. There may be a technical blocker.
(people who understand this please fill this in)
Cameron and ADQ are working on the hosted version. There is a test instance running, contact one of those two if you'd like to help with the sysadmin of the project