1 of 1 people found this helpful
I haven't heard of anyone using PayEverywhere in filemaker before. I am familiar with it as an iOS merchant gateway that other developers have used, but am not familiar myself with how you would integrate it into filemaker.
The developers site for PayEverywhere only lists SDK's for iOS and Android. But I did dig up this PDF from 2011 that mentions and details that there is an HTTPS based gateway for you to be able to submit calls against.
So theoretically, it would be possible to marry the two services together. You might want to consult with a developer that's familiar with eCommerce to see if they can help. Elance.com might be a good place to find a developer for that. Unfortunately, the custom development costs involved with building this integration from the ground up might outweight your clients desire to stay on PayEverywhere.
They might want to consider an additional or replacement merchant account that integrates easily with filemaker. There are plenty of examples there:
FM Credit Card: