However, since our system does not impose any special requirements on the MTA, it is possible to use any of the mailer available on the market - sendmail, qmail etc.
Web interface allows users to subscribe and unsubscribe from different lists.
System administrators can create new lists, organize existing lists in a tree-like structure for better navigation and perform other administrative functions. This method allows us to avoid any spam lists to be created. It is possible to create forms for subscription on any other web sites. All parts of the system, including web interface, are created using Perl language.