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Cyrus IMAP

Cyrus IMAP

Cyrus IMAP is an open source email and calendar server that supports IMAP and POP3 protocols. It is secure, scalable, and offers advanced email features for enterprises and service providers.
Office & Productivity Email
imap pop3 email-server
Cyrus IMAP screenshot
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Cyrus IMAP: Open Source Email Server

Cyrus IMAP is an open source email and calendar server that supports IMAP and POP3 protocols. It is secure, scalable, and offers advanced email features for enterprises and service providers.

What is Cyrus IMAP?

Cyrus IMAP is an open source email and calendar server software designed for enterprises and service providers. It supports critical email functions including the IMAP and POP3 protocols, as well as calendar and contact data synchronization capabilities.

Key features of Cyrus IMAP include:

  • High performance and scalability to handle large email volumes across multiple servers
  • Advanced security mechanisms like encryption and access control lists
  • Flexible virtual mailbox structure allowing segmentation and delegation of mailboxes
  • Email synchronization across multiple devices and platforms
  • Integration with LDAP directories for authentication and contact synchronization
  • Clustering, replication and automated failover for high availability
  • Modular architecture enabling custom configurations
  • Cross platform support across Linux and UNIX-based operating systems

Cyrus IMAP is suitable for large enterprises, ISPs, web hosting providers and universities looking to deploy a secure, high performance and reliable messaging server. With enterprise-grade capabilities and an active open source community around development and support, Cyrus IMAP is a robust solution for organizations with demanding email and scheduling infrastructure needs.

Cyrus IMAP Features

Features

  1. IMAP and POP3 email protocols
  2. Scalable architecture
  3. Access control lists for security
  4. Email indexing and search
  5. Calendaring and contact management
  6. Email quotas
  7. Email replication

Pricing

  • Open Source

Pros

Open source and free

Highly scalable

Very secure and stable

Advanced email features

Supports clustering

Cons

Complex installation and configuration

Limited user-friendly admin tools

Steep learning curve

Requires expertise to manage and maintain

Official Links

Official Website
https://www.cyrusimap.org/

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