Overview
The Courier IMAP server is a high-performance IMAP and POP3 server designed for enterprise environments. It utilizes Maildir format for mail storage, offering significant advantages in terms of scalability and reliability. The server features a built-in IMAP and POP3 aggregation proxy, enabling horizontal scalability by distributing client connections across a pool of Courier servers. This proxy setup allows for seamless mail account migration between servers, optimizing resource utilization. It supports standard IMAP and POP3 protocols, ensuring compatibility with a wide range of email clients. Courier IMAP can be deployed as a standalone IMAP server or integrated with other mail servers like Qmail, Exim, and Postfix. Its architecture emphasizes efficient resource management and minimal overhead, making it suitable for environments with hundreds of thousands of mail accounts.
Common tasks