What is it and why should you buy it? Quick PaybyCheck is a Windows software system offering all the tools and functionality you need to accept checks over the fax, telephone, email or internet. A more cost effective payment option & collection method than the credit card! Quicker than waiting for that promised payment in the mail, Quick PaybyCheck allows you to accept payment right away! It conforms to all American Banking Association X9 Committee Standards. Great for collection agencies, insurance co, martial art schools, retailers, wholesalers, internet stores, etc.