AI Economics Tools
AI
Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek
No keyCORSHTTPS
Email Verification API
This API validates email addresses through format checks, MX record lookup, SMTP probing, and catch-all detection. It is designed for AI agents to efficiently assess and filter out invalid email addresses before further processing, without the need for a user dashboard. The service is accessible via a straightforward JSON response, suitable for automated workflows.
Verified 4 days ago: 100% uptime
API key
Unconfirmed
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Live · 90/100
What our checks found
- Health score
- 90/100
- Reliability
- 100%
- Average latency
- 1604ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Email Verification API. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Authentication requirement is unconfirmed. Check the documentation before relying on this.
curl -s "https://verifymail.nanocorp.app/ENDPOINT" \
-H "Authorization: Bearer YOUR_TOKEN" \
-H "Accept: application/json"Where this listing comes from
Aggregated from one public source (freepublicapis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Email Verification API — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Email Verification API free to use?
Email Verification API is listed in our free catalogue, but it requires some form of authentication, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Email Verification API need an API key?
Email Verification API requires some form of authentication. Check the provider's documentation for which scheme it expects.
Can I call Email Verification API from browser JavaScript?
Yes. Email Verification API returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is Email Verification API still working?
Yes, as of 2026-09-18. Our automated check reached Email Verification API and recorded a 100% reliability score with a median response time of 1604 ms. We re-check on a schedule, and this page updates with the result.
Is Email Verification API available over HTTPS?
Yes. Email Verification API serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.