PestaRoo has always supported a fixed number of customer letters, for example, Welcome Letters, 90 day Letters, Late Installment Letters, and others. PestaRoo also supports an unlimited number of form letters that you can design and send anytime you choose. These letters support about 15 different merge fields so it is easy to design an attractive and personal letter. These new letters also support styles, meaning you can control fonts, sizes and even colors. All letters sent are stored for future use. This is a powerful marketing tool.