> iMessage E2E encryption is not opt-in. There isn't even an opt-out. This is incorrect. iCloud Backup escrows endpoint keys for "Messages in iCloud" to Apple

> iMessage E2E encryption is not opt-in. There isn't even an opt-out. This is incorrect. iCloud Backup escrows endpoint keys for "Messages in iCloud" to Apple every night in a non-e2ee fashion, which means that a non-endpoint has the keys, which means that iMessage is not e2ee. Apple has real-time access to plaintext of almost every single iMessage that transits their service. The only case in which they don't is where both users either don't have iCloud Backup enabled or both users have enabled e2ee iCloud Backup.