This program allows users to write personalized letters using message templates. Thus, if you have a client database you can create a single letter template and send personalized messages to a whole list of customers.  In this way all addressees will receive letters intended for them only.  After a distribution list has been made up you can go back to it at a later time.  The program is foolproof and easy to use. The program contains a built-in algorithm to check whether addresses are correct and current.  The program runs on the same basis as the smtp-server.  It connect with the server to check whether or not any given address on the sever exists.  Invalid e-mails can be deleted from the mail list.  By deleting invalid addresses from your mailing list you are reducing network traffic and the channel load of your ISP, while also facilitating current and future distributions.