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Plugin framework and API for seamless integration
A set of developer tools lets you extend the application in many ways, including user interface adjustments, Single-Sign-On, and more.
Mobile sync for Mail, Contacts, and Calendar
Let your users keep their data in sync with IMAP, CardDAV and CalDAV support. iPhone and iPad can get sync settings automatically.
Besides mobile apps, there is another option to work with e-mail on smartphones - a web UI optimized for small screens and touch input.
Encrypt, sign, decrypt and verify e-mails right in the browser. All the crypto takes place directly in the browser, neither PGP keys nor decrypted data are sent to the server.
A strong AES-256 browser-based encryption in Files module. When enabled, encryption process occurs right in the browser, the server never has access to unencrypted data or encryption keys.
Create shareable links
You can share your encrypted files with others using their public keys. Normal non-encrypted files can be shared with a direct link, optionally password-protected.