This plugin adds email encryption capabilities to a widely-used content management system, securing messages sent from the site. It is designed for site administrators and developers who need to protect sensitive user data, such as password resets or contact form submissions, from interception. The tool integrates directly with the site's existing email system, requiring no changes to user workflow for sending messages.

OpenPGP and S/MIME Support: Encrypts outgoing emails using two industry-standard protocols, allowing compatibility with a wide range of email clients that support these methods. Developer-Friendly API: Offers a set of filter hooks that mimic the platform's native functions, making it straightforward for developers to encrypt custom data or integrate the feature into other plugins. Automatic Key Handling: Manages public key and certificate storage within user profiles, simplifying the process of encrypting messages to specific recipients without manual key management for each email. Security-Focused Implementation: Wraps established, audited cryptographic libraries (OpenPGP.php and OpenSSL) and enforces best practices, such as rejecting weak encryption keys and using strong cipher modes automatically. Third-Party Plugin Integration: Allows for custom integration files to extend or override encryption behavior for specific popular plugins, providing flexibility for specialized site setups.