[taejo]

It seems TM SGNL also works when you're messaging with somebody using the genuine Signal app. They aren't gonna make a group chat with your archive bot to message you, and they might not be pleased when you add them to such a group chat.

[twobitshifter]

Maybe but if that’s their opinion, I don’t think they’d be pleased to know that you are archiving their chats in any case. I guess it would depend on who the user base is.