is this email address valid api
Is this email address valid API
Answer the simple yes-or-no question with a full validation stack behind it.
A useful validity API should go beyond syntax and check actual deliverability signals.
It should return enough detail to explain why a result was blocked or flagged.
It fits naturally into signup forms and lead capture workflows.
{
"success": true,
"email": "[email protected]",
"result": "valid",
"syntax_ok": true,
"mx_found": true,
"disposable": false
}What does valid mean?
Usually that the address is syntactically correct and looks safe enough for your policy.
Can "valid" still be risky?
Yes. A valid address can still be disposable, role-based, or catch-all.
Integration pattern
Use a server-side API key, validate on the backend, and return a short JSON result to your signup or import flow. That keeps secrets out of the browser and lets you enforce policy before you create user records.
Production concerns
The important pieces are rate limits, error codes, billing state, and clear response shapes. If a verification API is hard to integrate or hard to explain, developers will either skip it or wire it incorrectly.
FAQ
How do I use this page?
Use it as a quickstart reference and link it from your docs, onboarding flow, or marketing page.
What should I do next?
Create an account, try the demo, and move the integration into your backend with a real API key.
Do these pages replace docs?
No. They support discovery, search intent, and onboarding.
Why keep the code example short?
Because developers need the shape of the request, not a wall of boilerplate.