Email Validator by LifeStep
Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes
No keyCORSHTTPS
Atomic Mail
Email for AI agents: programmatic inbox creation and send/receive over JMAP
Verified 4 days ago: 100% uptime
API key
Required
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 707ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Atomic Mail. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Requires an API key. Check the docs for whether it goes in a header or a query parameter.
curl -s "https://atomic-mail.github.io/ENDPOINT" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Accept: application/json"Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Atomic Mail — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Atomic Mail free to use?
Atomic Mail is listed in our free catalogue, but it requires an API key, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Atomic Mail need an API key?
Yes. Atomic Mail authenticates with an API key. Keep it server-side rather than in browser code, because anything in your frontend bundle is readable by anyone who opens developer tools.
Can I call Atomic Mail from browser JavaScript?
Yes. Atomic Mail 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 Atomic Mail still working?
Yes, as of 2026-09-18. Our automated check reached Atomic Mail and recorded a 100% reliability score with a median response time of 707 ms. We re-check on a schedule, and this page updates with the result.
Is Atomic Mail available over HTTPS?
Yes. Atomic Mail serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.