The server has the bits to do it [1], but clients need to implement it (they are the "ends" in "end-to-end encryption" after all). However this hasn't seen much

The server has the bits to do it [1], but clients need to implement it (they are the "ends" in "end-to-end encryption" after all). However this hasn't seen much interest from app developers and users. [1]: https://github.com/mastodon/mastodon/pull/13820 https://github.com/mastodon/mastodon/pull/13820