You know who's thought a lot about secure messaging? SWF's @mallory .

See also:
https://socialwebfoundation.org/2025/12/19/implementing-encrypted-messaging-over-activitypub/

@scottjenson @katzenberger

More pointedly, I would accept DMs from (and periodically check my inbox for) Mastodon but i would not give my unique and precious signal identifier to all of mastodon and all who crawl it @katzenberger @scottjenson

in 2026, gabe is absolutely right. a few years ago, i would've been the first one debating this position... but it's 2026.
@gabek @scottjenson

sadly signal doesn't make integrating or verifying from within Masto or other AP implementation easy (or debatably even possible)
@asmaloney @scottjenson @phillycodehound

Huge fan of the Germ team btw, and of MLS generally, i think MLS is the only DMs AP should be using and having groupchats with bsky users in them is kinda easy once we get modern/MLS+MIMI groupchat going across AP implementations... @stefan @phillycodehound @scottjenson

sort of-- bsky is just verifying/confirming a self-attested Germ identifier. and no android yet, so only half of bsky users in the US and far less outside US.
@stefan @phillycodehound @scottjenson

+1
@jesseplusplus @scottjenson

@django https://codeberg.org/socialweb.coop/activitypub-testing this could easily be forked as a starting point