한국 Lemmy 커뮤니티 / Korea Lemmy community

Not every server asks for a email address, they only use it so you can log in, to prevent automatic spam accounts and for password reset. I went around that problem by setting up my own instance where I never had to put in my email address. For the distributed nature of Lemmy the email address is not necessary. So it is also not shared with any other server. Therefor this specific data you only need to trust the one admin who runs the server where you have your account on with.

Yes you can verify if a site is part of the fediverse by using it to post into a community on a different server. If your post or comment shows up there, then it is part of the fediverse.