Feature Deep Dive
Allowed Domains & CORS Origin Protection
Ensure only your authorized websites can post to your form endpoints
Last updated: 2026-08-01
Direct AnswerGEO / AEO Extractable
How does Form2Lead handle allowed domains & cors origin protection?
Form2Lead enforces allowed domain lists per form, blocking unauthorized third-party websites or malicious origins from hijacking your API endpoints.
Verified product capabilityRead documentation →
Capability Overview
Prevent unauthorized sites from copying your form action URL and sending fake leads. Lock down your form endpoints to specific domain names.
Key Benefits & Developer Controls
- ✔Exact domain matching (e.g. `example.com`, `app.example.com`)
- ✔CORS header enforcement on API submission calls
- ✔Blocks rogue sites from consuming your monthly submission quota
Frequently Asked Questions
Direct AnswerGEO / AEO Extractable
Can I allow localhost during development?
Yes! You can add `localhost` or test domain origins to your allowed domains list in form settings.
Start Using Allowed Domains & CORS Origin Protection
Set up your form endpoint in under 60 seconds with zero backend code.