This task can be performed using Private.Ki
Encrypted email and messenger in one app
Best product for this task
Private.Ki
tech
Private.Ki unifies encrypted email, messenger, and group chat in one app, with keys kept on your device so even the provider cannot read, decrypt, or silently weaken your communications.
zero-access mailboxe2e messengerencrypted groupchatencrypted messagingsecure emailprivacy techteam communicationcybersecurity

What to expect from an ideal product
- Private.Ki stores encryption keys only on your device, so the provider has zero technical ability to read or hand over your group chat messages.
- One app replaces both your encrypted email client and your secure messenger, cutting the friction of juggling separate tools and separate keys.
- Group chats stay end-to-end encrypted by default, meaning no silent key escrow, no server-side decryption, even if the provider gets a court order.
- Setup does not require trusting a third party to manage or certify your keys, which closes the most common backdoor in provider-managed encryption schemes.
- Works for teams that need audit-proof communication records without giving their hosting provider access to the content of those records.
