Ability Mail Server is a small and easy to use mail server, that supports SMTP, POP3,IMAP4, Remote Administration and attachment blocking (based on file extension) to prevent many email viruses from getting to the users.The server can be used in a Internet, LAN environment and/or as an internal mail systems. With only basic features, the mail server is easy to setup and requires little configuration. A step-by-step wizard guides you through the process of setting up your mail server. Additional features include mail quotas, SMTP Relay, access control by IP or SMTP authentication, integrated backup, catch-all accounts, aliases and more. Ability Mail Server also includes a webmail server that allows you to retrieve your email from any web browser, using a hotmail-style web interface to read and reply to your mail.Free with one domain and up to 5 users. If you need more users, pricing starts at $80 for 25 users and 10 domains.