PostHush review
A focused OpenPGP mailbox with device-held keys and standard mail-client support.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
PostHush is an invite-only private email service for individuals and small teams seeking an ad-free mailbox without behavioral advertising profiles. It combines end-to-end OpenPGP encryption with a web mailbox and standard email protocols, while also offering passwordless sign-in through single-use email links. The service is aimed at people who want a focused private-mail setup rather than a broad collaboration suite.
Its standout feature is key custody: private OpenPGP keys are generated and held on the user’s device. That design keeps encryption central to the mailbox, while inbound messages are processed to strip tracking pixels and remote beacons. PostHush also supports mailbox export in .mbox format, giving users a standard way to take their mail elsewhere. The ad-free model and absence of a behavioral advertising profile reinforce its narrow focus on private correspondence.
For ecosystem fit, PostHush supports IMAP and SMTP, including Apple Mail, Thunderbird and any IMAP client. That makes it possible to use established mail applications alongside the web service, although the listed deployment is cloud-based and web-focused. Availability is currently invitation-only, and the service is paid rather than free. Choose PostHush if device-held OpenPGP keys, tracker stripping and open-protocol access are your priorities. Consider an alternative if you need immediate public signup, a free tier or a wider platform footprint.
PostHush pros and cons
- Where it wins
- End-to-end OpenPGP encryption with device-held private keys
- IMAP and SMTP support for Apple Mail, Thunderbird and other clients
- Strips tracking pixels and remote beacons from inbound messages
- Where it doesn't
- Access is currently limited to invited users
- There is no free plan
- The service is web-based, with external apps relying on IMAP or SMTP
PostHush fact sheet, pricing and score →
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