GnuPG implements the OpenPGP standard and provides tools to encrypt and sign data and communications, with key management and directory access.
OpenPGP Email Encryption
This OpenPGP page lists email applications that support the standard directly or through additional software, across several desktop platforms.
About OpenPGP Email Encryption
This page lists email applications and webmail options that support the OpenPGP standard either directly or with additional software. Entries are grouped by Windows, macOS, Android, iOS, Linux, browser plugins, and webmail providers, including providers that work with Mailvelope and providers with OpenPGP implemented in website JavaScript.
The page states its authors do not develop the listed third-party apps, have done no security audits, and cannot provide security guarantees. It notes that in-browser JavaScript implementations do not need a plugin but are not considered end-to-end secure by some people, and that Hushmail has limited OpenPGP support.
Key features
- Lists Windows apps supporting OpenPGP directly or with additional software
- Lists macOS apps including add-on setups for Apple Mail
- Lists Android and iOS apps with OpenPGP support
- Lists Linux apps supporting OpenPGP directly or with helpers
- Lists browser plugins such as FlowCrypt, Mailvelope, and Psono
- Lists webmail providers using plugins or built-in JavaScript cryptography
Best for: People comparing email apps and webmail options for OpenPGP support on their platform.
Good for
- Covers desktop, mobile, browser plugin, and webmail options in one list
- Separates plugin-based webmail from providers with built-in JavaScript OpenPGP
- Only includes published, working software that implements the standard
Watch out for
- Authors state they performed no security audits and offer no security guarantees
- Authors state they are not actively developing the listed third-party apps
- Notes some people do not consider in-browser JavaScript setups end-to-end secure
OpenPGP Email Encryption at a glance
- Website
- openpgp.org/software
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, iOS, Linux, macOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
OpenPGP Email Encryption alternatives
Tools and sites you could use instead, ranked by how closely they match.
Available on web, iOS, Android, and desktop, Proton Mail is an encrypted email service that offers free accounts.
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Tuta offers encrypted email, calendar, and contacts, with apps that the site says protect personal data using end-to-end encryption.
Encrypt email and files on Windows with Gpg4win, a software package based on GnuPG.
Search the MIT PGP public key server for keys by email address or name, then retrieve the matching public key.
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OpenPGP Email Encryption FAQ
Do I need a browser plugin for webmail OpenPGP?
Some listed webmail providers use Mailvelope, while other listed providers implement OpenPGP in JavaScript without an additional plugin.
How can a missing project be suggested?
Open a pull request at github.com/OpenPGP/openpgp.org; only published, working software that implements the standard is included.
Are in-browser webmail implementations end-to-end secure?
The page says they provide basic security guarantees with OpenPGP, but some people do not consider them end-to-end secure.
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