I use cp and an external hdd for backups

That would require banning like 70% of comouter market (yes phones etc. are computers and I’m tired of pretending they’re not)

This would ban most of computing tbh

But i can read those signals

By cross platform i mean that you can send message from one server (e.g. proton mail) to another (e.g. gmail)

This is not possible with signal, or any other messengers because email is a protocol and not a software

Don’t kill emails. They’re the only way of cross-platform communication that we have remaining

A walking desk