Since [adding Freshbooks](http://www.wufoo.com/2009/10/27/generate-invoices-with-wufoos-freshbooks-integration/) to our list of [payment integration partners](http://www.wufoo.com/payments/) we’ve been super excited to see how many people are using our combined services to easily collect information and create invoices online. Everything has worked pretty much flawlessly, but one feature request that we’ve received many times, from both our users and the [FreshBooks](http://freshbooks.com) team, is the ability to invoice existing FreshBooks clients rather than always create a new client when a form is submitted.
We had initially envisioned our FreshBooks integration only being used to create and invoice brand new clients since you can also invoice existing clients through the FreshBooks interface. But as it turns out people want to use the integration for even more than we initially hoped for and we’re happy to give you want you want.
Effective immediately, any new invoices that are created with an email address already associated with a FreshBooks client will be assigned to the existing client instead of creating a new client. If the email address is not associated with an existing client then a new client will be created and invoiced. We genuinely appreciate all the feedback that we’ve received and we hope this will make invoicing a little bit easier.