Matrix seems to be the best implementation of this I've seen up to now, I agree. Even just giving you the option to upload to Drive or iCloud, while allowing y

Matrix seems to be the best implementation of this I've seen up to now, I agree. Even just giving you the option to upload to Drive or iCloud, while allowing you to keep the key yourself on a note or another device, would be a step in the right direction for an app like WhatsApp that has no "messages" on the server at all after delivery(or so it always used to work, not sure if it's still the case - my GDPR export from yesterday literally only had my profile picture and contacts).