Free-GPGMail

The software is a plugin for Apple Mail that adds support for encrypting and signing messages with GnuPG. It integrates directly into the macOS Mail application, allowing users to apply OpenPGP cryptographic operations on their email without leaving the familiar Mail interface. The plugin handles key management, encryption, and verification in the background, presenting standard Mail dialogs for composing and reading secured messages.

It is intended for macOS users who need to exchange confidential information via email and prefer using the open‑source GnuPG implementation. By embedding GnuPG functionality within Apple Mail, the plugin enables seamless workflow for individuals and organizations that already rely on the native Mail client for daily communication.

The project is marked as stable and is distributed as a core macOS component, indicating that it has reached a mature state suitable for production use. Its primary distinction is the tight integration of OpenPGP capabilities with the Apple Mail ecosystem, eliminating the need for external email clients or separate encryption tools.