One way to do this relatively quickly. Create a Formstack sign up form which creates recurring FreshBooks invoices. Use FreshBooks and Authorize.net to manage t

One way to do this relatively quickly. Create a Formstack sign up form which creates recurring FreshBooks invoices. Use FreshBooks and Authorize.net to manage the recurring payments. If you don't want the hassle of using Authorize.net, just use PayPal, but the invoice has to be manually paid every month. http://www.freshbooks.com/blog/2010/06/30/create-recurring-invoices-with-formstack/ http://www.freshbooks.com/blog/2010/06/30/create-recurring-i... Cheers, Sunir, FreshBooks