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SPECIFICTION
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Private.Ki Mail

private.ki

From $0.42/mo Free plan WebiOSAndroid
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Spec score 8.0 #17 of 28 in Email providers

What it 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 uses end-to-end encryption 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. Undo send supports 5, 10, 20, or 30 seconds, and standard mailbox folders are included. Web, iOS, and Android access are listed. Security features include TOTP two-factor authentication, QR pairing, and device-bound sessions. The maker says it cannot recover a lost passphrase or protected key and has no independent audit yet.

Spec sheet

Product
Private.Ki Mail provides end-to-end encrypted email between Private.Ki users, with message encryption and signature checks shown for each message.Read 8 Oct 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
Free plan
YesRead 15 Sep 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
Security
The maker identifies Ed25519 device-generated keys, AES-256-GCM message encryption, OpenPGP packaging and OPAQUE sign-in among its cryptographic components.Read 8 Oct 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
Account protection
Account security includes TOTP two-factor authentication, QR device pairing and sessions bound to a device key using DPoP.Read 8 Oct 2026 · private.ki
Attachment limit
Attachments are limited to 25 MB per file on the current Free plan and are encrypted on the device before upload.Read 8 Oct 2026 · private.ki
Audit status
The company says it has no independent audit yet.Read 8 Oct 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
End-to-end encryption
YesRead 15 Sep 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
Intended audience
The maker describes Teams as intended for organisations and offers a Dedicated deployment on a customer’s own server.Read 8 Oct 2026 · private.ki
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.Read 8 Oct 2026 · private.ki
Recovery limit
Private.Ki says it cannot recover a lost passphrase or the key it protects.Read 8 Oct 2026 · private.ki

Plans and prices

Free Free billed monthly End-to-end encrypted email and messenger · One @private.ki address · Attachments up to 25 MB · Signatures and recipient autocomplete · Search across senders, subjects and addresses · Web access; iOS and Android listed on the pricing page Read 15 Sep 2026 · private.ki
Plus $5 a month billed annually Planned tier, not yet on sale · Own domain · Up to 10 addresses and aliases · 50 GB encrypted storage · Full encrypted mailbox export and backup Read 15 Sep 2026 · private.ki
Plus $5 a year $5 a month on a yearly plan; month-to-month costs a little more; indicative and not on sale yet 50 GB encrypted storage · up to 10 addresses and aliases · 100 MB attachments planned Read 8 Oct 2026 · private.ki
Dedicated Priced on request On request Own Private.Ki server, managed by Private.Ki or run by the customer Read 8 Oct 2026 · private.ki
Free Price not published $0 / month; free plan does not expire One @private.ki address · 25 MB attachments · standard paired-device allowance Read 8 Oct 2026 · private.ki
Teams Priced on request Pricing set per organisation and published at launch; coming soon Everything in Plus per seat · admin roster · central billing · company domain Read 8 Oct 2026 · private.ki

Every Private.Ki Mail plan and price →

Strong points and limits

Strong points

  • End-to-end encryption for Private.Ki users
  • Free plan available
  • 25 MB encrypted attachment limit
  • TOTP two-factor authentication
  • Public-key import and export

Limits

  • No free trial
  • Plus is planned, not on sale
  • Lost passphrases cannot be recovered
  • No independent audit yet

Who it suits

Private.Ki Mail suits individuals wanting encrypted email with web, iOS, or Android access. Organisations can consider the planned Teams tier or Dedicated deployment, though those options are not currently priced for sale.

Verdict

Private.Ki Mail provides a free encrypted-mail option with clear device-side encryption and key controls. Check recipient encryption conditions and the recovery limitation before relying on it for important correspondence.

Where Specifiction places it

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