Kickbox
Email verification API
- Authentication
- No auth
- HTTPS
- Yes
- CORS
- Yes
- Category
- Documentation / URL
- https://open.kickbox.com/
Overview
Kickbox’s open endpoint checks if an email’s domain is disposable — keyless and CORS-enabled (verified live). The full verification API (syntax, deliverability, risk) is the paid product; the open endpoint is free.
Quick Start
Disposable check (verified live):
curl "https://open.kickbox.com/v1/disposable/test@gmail.com"{ "disposable": false }Authentication
None — keyless for the open endpoint.
Rate Limits & Notes
- The open endpoint is free and keyless (verified).
- It only answers
disposable: true|false— the full Kickbox API (email verification with deliverability checks) is a paid service. - Great for a quick “reject burner emails” check in signup flows.
FAQ
Is Kickbox free? The open disposable-check endpoint is free and keyless (verified); full verification is paid.
What does the open endpoint return?
Just {"disposable": true|false}.
Where’s the full API? Kickbox’s paid verification API (api.kickbox.com) with a key.
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