Check Print and Mail API Integration

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You can now integrate Checkflo’s check print and mail capabilities into your own web or desktop applications with an easy to use API from Checkflo!

The Checkflo API is a powerful tool allowing for the easy integration between your back-office systems and the Checkflo platform.

  • Fully automate your payment management by utilizing our REST API integration.
  • Use standard HTTPS POST requests within your native system language or through various command line tools.
  • Responses are returned in  JSON format.
  • Test your code with our fully functional sandbox environment to ensure accuracy prior to going live.

Checkflo’s API Services:

Upload Checks


The REST API feature “Upload Checks” provided by Checkflo delivers the following advantages:

  • Seamless integration for merchants through our REST API.
  • Automation of operations, reducing the need for manual data entry.
  • Independence from changes and updates, ensuring consistent functionality.
  • Pass custom check data.


Create Merchant Account


The REST API feature “Create Merchant Account” offered by Checkflo presents the following benefits:


  • Effortless creation of new client (merchant) accounts, particularly beneficial for merchants with multiple clients.
  • Capability for merchants to add banks associated with the created accounts on behalf of their clients.
  • Provision for merchants to include a signature image of the Signing Officer.

Ready to get started?

No monthly fee; no credit card required.

Our vision is to revolutionize the way businesses handle payments by providing a secure, convenient, and automated solution for check printing and mailing.

Consider how much more productive you could be with almost half a week's worth of business time regained, and we're here to assist you with that!