This endpoint is used to send form submission data to HubSpot using authentication. This endpoint has a higher rate limit than the unauthenticated v3 Form Submission endpoint endpoint.
Form submissions from external sources can be made to any registered HubSpot form. You can see a list of forms on your account by navigating to Marketing > Lead Capture > Forms.
We recommend creating a unique form in HubSpot to parallel your custom website form. This will make it easy to track submissions on that particular custom form in the future.
This endpoint has the following rate limits:
- Free/Starter accounts: 100 requests/10 seconds
- Professional/Enterprise accounts: 150 requests/10 seconds
- Accounts with the API Add On: 200 requests/10 seconds
x-www-form-urlencodedendpoint? You can find the details for that endpoint here.