Payments ← Knowledge Base What payment processors does mHelpDesk integrate with? How can I test that my Authorize.net gateway is working properly before going live? Does mHelpDesk accept credit cards or Paypal? Void Online Payments How do I apply a payment to a work order/service request? Can customers pay from a sent invoice? Do my customers need to have a PayPal account to pay? How to use STRIPE Does mHelpDesk Payments work outside of the U.S.?