ePay
Link to their website: https://epay.dk/
If you haven't already, please follow the getting started guide.
Features
ePay supports the standard checkout process.
Configuration
You must provide a merchant number and access key for authentication.
A URL must be set for the API:
If you wish to do extra security measures for server callbacks like parameter hashing,
IP checks, etc., you can register an implementation of the interface IEpayPaymentVerifyService.