Mailing List Deluxe is a powerful tool in any marketing and communications arsenal. You simply write one message and send it to your whole mailing list. The program's real power, however, is in its ability to personalize your communications. You can address everyone on your list by their first name, if you so choose. Or you can include other details, such as the town or city where they live (so long as you actually have that information in your customer database).