FAQ I have installed MAILERS+4 - Now what? You must first open up MAILERS+4. Now you must supply a file for MAILERS+4 to use. You do this by going to "File," then "Open," and selecting the file that you wish to work on. Next you must tell MAILERS+4 what all the fields in your file mean. You do this my going to "File Format Fields." Here you associate your database fields with the format names that we provide. Now that your file is formatted you may now process it through the rest of MAILERS+4 functions. You can read more about formatting in Chapter 3 of the MAILERS+4 Manual "Formatting Your List."