Payment gateway integrations that allow invoice payments outside of the bundled gateways.
Use beanstream as your credit card processor.
Use the Authorize.net service as the credit card processor for invoice payments.
Stripe is awesome and we hope you love it as much as we do. Secure credit card payments without the hassle.
Use NMI as your credit card payment processor.
Use BluePay for credit card processing your invoice payments.
Accept Paypal Express payments for your invoices. Including invoice deposits.