You can do that with Telegram if you have a bunch of centrally-managed groups; simply mute them until you need them. Admins can unmute them as necessary. That

You can do that with Telegram if you have a bunch of centrally-managed groups; simply mute them until you need them. Admins can unmute them as necessary. That being said, I don’t think I’d want Telegram to be my failover. They have a tendency to experience regional issues with great frequency, and if you’re in a lot of active chats, things start to get buggy.