According to the invention, an insertion system for collating sheets of printed material for insertion into an envelope is disclosed. The insertion system includes an insertion machine, application software and an operating system. Included in the application software is a first function and a second function, where the first function performs tracking for each packet and the second function controls operation of the insertion machine. Each packet includes a plurality of pieces of printed material that may ultimately be sealed in an envelope. The operating system runs the application software at any given instant and executes the first and second functions.