Private.Ki Mail
Private.Ki Mail is an email service that encrypts messages between Private.Ki users.
What Private.Ki Mail is
Private.Ki Mail is an email service that encrypts messages between Private.Ki users. Message bodies, subjects, and attachments are encrypted on the sender’s device and decrypted on the recipient’s device, with encryption and signature checks shown for each message. Mail to outside providers is end-to-end encrypted when the recipient has a PGP key; otherwise it is delivered normally and marked accordingly. The Free plan costs nothing and includes one @private.ki address, encrypted email and messenger, signatures, recipient autocomplete, search, and attachments up to 25 MB per file. Mail tools include undo send for 5, 10, 20, or 30 seconds, multiple signatures, and standard mailbox folders. Web, iOS, and Android access are listed. TOTP two-factor authentication and QR device pairing protect accounts. The maker says lost passphrases or protected keys cannot be recovered, and no independent audit exists yet.
Good
- End-to-end encryption between Private.Ki users
- Free plan with one @private.ki address
- Attachments encrypted before upload
- TOTP two-factor authentication
- Web, iOS, and Android access
Watch out
- Free attachments are limited to 25 MB
- Outside recipients may receive unencrypted mail
- Lost passphrases and keys cannot be recovered
- No independent audit yet
Who it suits
Private.Ki Mail suits people seeking encrypted email with web and mobile access. It is also relevant to users exchanging PGP-protected mail or needing signatures and searchable messages.
Verdict
Private.Ki Mail offers device-side encryption, useful mailbox tools, and a free plan across web and mobile. Users should understand the external-recipient behavior and the consequences of unrecoverable credentials.
Plans and prices
From Private.Ki Mail's own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Plus | $5 a month | 50 GB encrypted storage · up to 10 addresses and aliases · 100 MB attachments planned · $5 a month on a yearly plan; month-to-month costs a little more; indicative and not on sale yet |
| Dedicated | Priced on request | Own Private.Ki server, managed by Private.Ki or run by the customer · On request |
| Free | — | One @private.ki address · 25 MB attachments · standard paired-device allowance · $0 / month; free plan does not expire |
| Teams | Priced on request | Everything in Plus per seat · admin roster · central billing · company domain · Pricing set per organisation and published at launch; coming soon |
The facts
Each one read from Private.Ki Mail's own pages, with the date it was checked.
What it does
- Account protection
- Account security includes TOTP two-factor authentication, QR device pairing and sessions bound to a device key using DPoP.checked 8 Oct 2026
- Attachment limit
- Attachments are limited to 25 MB per file on the current Free plan and are encrypted on the device before upload.checked 8 Oct 2026
- Audit status
- The company says it has no independent audit yet.checked 8 Oct 2026
- Encryption
- Mail bodies, subjects and attachments between Private.Ki users are encrypted on the sender’s device before transmission and decrypted on the recipient’s device.checked 8 Oct 2026
- End-to-end encryption
- Yeschecked 15 Sep 2026
- External email
- Mail to outside providers is encrypted when the recipient has a PGP key; otherwise it is delivered normally and flagged as not end-to-end encrypted.checked 8 Oct 2026
- Features
- Mail includes undo send for 5, 10, 20 or 30 seconds, multiple signatures, sender and subject search, and Inbox, Sent, Drafts, Archive and Trash folders.checked 8 Oct 2026
- Integrations
- Users can export their public key or import another person’s public key, and any program that speaks PGP can encrypt mail to Private.Ki’s published public key.checked 8 Oct 2026
- Intended audience
- The maker describes Teams as intended for organisations and offers a Dedicated deployment on a customer’s own server.checked 8 Oct 2026
- Metadata
- The maker says its servers store ciphertext and necessary delivery metadata, including usernames, recipients and approximate storage times; it says it keeps no access or connection logs.checked 8 Oct 2026
- Product
- Private.Ki Mail provides end-to-end encrypted email between Private.Ki users, with message encryption and signature checks shown for each message.checked 8 Oct 2026
- Recovery limit
- Private.Ki says it cannot recover a lost passphrase or the key it protects.checked 8 Oct 2026
- Security
- The maker identifies Ed25519 device-generated keys, AES-256-GCM message encryption, OpenPGP packaging and OPAQUE sign-in among its cryptographic components.checked 8 Oct 2026
- Support
- The pricing page lists documentation and email support for Free and priority support for Plus; its help center contains product guides and how-to articles.checked 8 Oct 2026
Money
- Free plan
- Yeschecked 15 Sep 2026
Where it runs
- Platforms
- The product is available on the web and Android; the company says its iPhone app is built but not yet listed, and its product page describes iPhone and iPad availability as coming soon.checked 8 Oct 2026
Alternatives to Private.Ki Mail
- 1
Disroot Email
Free planOpen sourceAndroidiOSWebExtension8.6Free plan - 2
Aster Mail
Free planOpen sourceAndroidiOSWebLinux8.5From $2.42 a month - 3
Neir
Free planOpen sourceAndroidiOSWebAPI8.5From $51 a year - 4
Mailfence
Free planAndroidiOSWebAPI8.2From $2.50 a month - 5
SecureMyEmail
Free planAndroidiOSWebmacOS8.2From $29.99 a year - 6
NevTan Mail
Free planAndroidiOSWebmacOS8.1Free plan