We’re in an exciting time for users who want to take back control from major platforms like Twitter and Facebook. However, this new environment comes with challenges and risks for user privacy, so we need to get it right and make sure networks like the Fediverse and Bluesky are mindful of past...
I believe Mastodon has a “transfer accounts” feature. I don’t know if Lemmy and Kbin do though.
It’s tricky to implement though. Unfortunately ActivityPub didn’t really consider account transfers as part of the initial protocol design.
It’s something Bluesky is doing better, since they designed their system to be able to handle transfers from day 1, as a core part of the protocol. (it’s going to become federated, eventually, but using their own protocol instead of ActivityPub).