Three single-purpose tools that run in your browser. Nothing you paste is stored, and none of them ask you to sign up.
Full validation for one address: syntax, MX, disposable, role account, and typo correction.
Open checker →See which mail servers handle a domain, with priorities and provider fingerprinting.
Open lookup →Paste a list of addresses or domains and sort the burners from the real ones. CSV export.
Open checker →These pages call the same endpoint a script would, one request at a time. That is fine for checking a handful of addresses and wrong for a signup form, which needs an answer in the time it takes to render a page, and for a mailing list, which needs thousands of answers without tripping a rate limit.
For both cases, call the API directly:
curl "https://mailprobe.kevin-c0319.workers.dev/v1/verify?email=name@example.com"
A free key covers 1,000 calls a month. No credit card, and the key is issued in one request:
curl -X POST "https://mailprobe.kevin-c0319.workers.dev/v1/signup" \
-H "content-type: application/json" \
-d '{"email":"you@company.com"}'
Read the API docs