Cyrus IMAP

Cyrus IMAP Overview

Cyrus IMAP is a free and open-source email, contacts, and calendar server that provides a robust and scalable solution for managing messaging services. As an IMAP (Internet Message Access Protocol) server, Cyrus IMAP allows users to access their mailboxes remotely, while providing advanced features such as speed, security, efficiency, search capabilities, and support for multiple protocols.

Main Features

• Speed: Designed for high-performance and scalability, making it suitable for large installations.
• Security: Offers robust authentication options, including Cyrus SASL, Kerberos Authentication, LDAP Authentication, and SQL Authentication.
• Efficiency: Stores mailbox databases in private parts of the filesystem, providing improved efficiency, scalability, and administrability.
• Search: Enables fast and efficient search capabilities across email, contacts, and calendar data.
• CardDAV and CalDAV support: Supports CardDAV (Contact Data Access Protocol) and CalDAV (Calendar Data Access Protocol) for accessing contact and calendar information.
• Robust data storage: Provides a reliable storage solution for mailbox data.
• Replication: Enables replication of mailbox data across multiple servers.
• Flexible filtering support through Sieve: Allows for flexible filtering rules using the Sieve language.

By providing these advanced features, Cyrus IMAP aims to be the best open-source secure, scalable mail server, offering breadth and depth of functionality across email, contacts, calendar, and related messaging services.