As a messaging system Signal, Whatsapp can be considered as a replacement for email. But email is also used as your identity online. All auth systems use email for signup, login, password reset. How will this use case of email work with messengers?
In Signal, Whatsapp, messages are end to end encrypted, but one way where this encryption is undone in some ways is the backup process. Whatsapp allows users to backup messages and media to Google drive and it's unencrypted. So these messengers still don't solve the problem of having e2e communication + encrypted archives of data.
In Signal, Whatsapp, messages are end to end encrypted, but one way where this encryption is undone in some ways is the backup process. Whatsapp allows users to backup messages and media to Google drive and it's unencrypted. So these messengers still don't solve the problem of having e2e communication + encrypted archives of data.