MDaemon (pronounced M-Day-mon) is one of the most widely used mail servers in the world, trusted by customers in over 90 countries to meet the needs of their small to medium sized businesses. MDaemon is a reliable and secure mail server that does not require expensive administration or impose high per-user costs. It simplifies messaging and collaboration requirements with an intuitive, user-friendly design offering enterprise-class features that can be managed with minimal training and support.