mailvelope/mailvelope

Health v2 · maintenance only

Adoption not part of the score

1838 stars · 221 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Mailvelope is a browser extension for Chrome and Firefox that adds OpenPGP end-to-end email encryption to arbitrary webmail providers. It uses OpenPGP.js as its cryptographic backend and offers a client API for integrating encryption into web applications.

Use cases

• send PGP-encrypted email from Gmail or other webmail
• decrypt OpenPGP messages in the browser
• manage OpenPGP keys for webmail encryption
• integrate PGP encryption into a web app via client API
• sign emails with OpenPGP in the browser

When to choose

• you want end-to-end encrypted email with an existing webmail provider
• you need OpenPGP support in Chrome or Firefox without a desktop mail client
• you want a well-established, actively maintained browser-based PGP solution

When to avoid

• you need encrypted email on mobile devices
• you use a native mail client that already supports OpenPGP
• you need S/MIME rather than OpenPGP

Facets

plugin · maturity active

cryptography security email browser-extension security privacy email browser-extensions browser browser-extension openpgp pgp-encryption webmail email-encryption chrome-extension firefox-addon end-to-end-encryption javascript

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mailvelope/mailvelope")