[GeekyBear]

> The downside is that they will opportunistically send your messages via Signal. If the recipient chooses to not have SIgnal installed any longer, then your messages go into a black hole.

The user cannot just log out of Signal and have the app on other people's devices automatically fall back on SMS the way it works with iMessage?

[mynameisvlad]

A lot of people will just delete an app and think there were no side-effects. There was an article here a few weeks ago about people not cancelling in-app subscriptions after deleting an app. Apple will remind you after it deletes it, Google does not.

Logging out might not even be enough, depending on the logic on Signal’s side. Do they use active devices, or just that an account exists?