You can create a sandbox account via the sign up for a test account page.
You can test card payments straight away with your sandbox account. To test alternative payment methods, or payments that use raw card details (assuming you have SAQ-D PCI compliance), email our Support team at support@checkout.com.
To find out more about the payment methods we support, see our documentation site.
For information on creating a test account in our sandbox environment, see our Get Started page.