Letter campaigns through traditional mail have the potential to reach a lot of customers. Research shows that letters that arrive in a windowed envelope get opened about 90% of the time, and our system dynamically generates the name and address of your client on each letter. The address is perfectly placed so it shows in a windowed envelope, so you don't even have to think about the logistics involved - just fold and send! Now you can kick out a letter campaign with personalized headers with a just few simple clicks!