[commoner]

Former Signal users can unregister their phone numbers from Signal on this page:

https://signal.org/signal/unregister

[stilisstuk]

Yes i know that. So when people don't reply, I check three messages has not been delivered and try to find a why to tell my contacts how to unregister. Which is an unreasonable burden I put on people who try signal and decides it's not for them.