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How to customize success and error messages

Customize what submitters see after submitting—both success and error messages. This is especially useful for AJAX/JSON flows where you control the UI.

Where to change messages

  1. Open your form in the dashboard.
  2. Go to Workflow.
  3. Under Response Messages, edit:
  4. Success Message and Error Message
  5. Click Save.

When these messages are used

AJAX / JSON submissions

When you submit JSON, Forms.fyi responds with JSON. On success you’ll receive a message value (your configured success message).

On errors (validation failures, origin issues, etc.) you’ll get an error response that you can display in your UI (your configured error message may be used for validation-related responses).

Classic HTML form submissions

For HTML form posts, success typically results in a redirect (303) to a thank-you page (built-in or your custom redirect). Because the browser navigates away, your success message may not be visible unless your UI renders it before navigation.

Copy tips

  • Keep success messages short and action-oriented.
  • For errors, tell users what to do next (“Try again”, “Check required fields”, etc.).