Webmasters can utilize this tool to offer distinctive mail services to their site visitors. This system allows multiple recipients. This tool offers LDAP authentication and adds the email addresses from other external LDAP address books. This tool has the capability to convert the time and date of the messages automatically to the local time zone. It allows the users to send MIME multimedia messages along with their emails. It provides support for the features like encryption and digital signatures and sometimes, it supports the compression of gzip files when modern browsers are used.