Requirements for MAPS are minimal. All you need is to do is to Signup for a MAPS account. Other than that we believe that you local email client is the best way of reading and handling your email. Any email client that supports POP will work. If you use MAPS as your email server then you would configure your email client to POP off of defaria.com. Alternately you can use MAPSPOP to retrieve your email from any email address but filter it through MAPS.
Additionally you can visit the MAPS web site to view spam activity, manage your white, black and null lists.