If you create a new Mastodon instance, can that meet your needs? Can that serve as a private group?
Edited 89d ago
@KrajciTom @alex @infosec_jcp If it can be made private/invite only that could work! Though probably we'd all have to make an account specifically in that instance
@dramypsyd The instance I run, while very public, is invite only. Set all accounts on it to followers-visibility-only and while more investigation would be required I think you’re getting into range.