Real-time verify
One address, instant verdict. Drop it into your signup form via the API so bad emails never enter your database.
Verify any address in milliseconds, or find someone's email from just a name and a company. Xomexo reads the directory behind corporate mail gateways — confirming inboxes that other tools shrug off as “catch-all”.
Try it — no signup needed.
Check a single address, clean an entire list, or discover emails you don't have yet.
One address, instant verdict. Drop it into your signup form via the API so bad emails never enter your database.
Upload CSV or Excel. Watch live progress, then download the clean list and the unverifiable ones as separate files.
Have a name and a company but no address? We generate the likely patterns, test them, and return the one that's real.
One key, JSON in and out. Verify, find, and bulk endpoints with usage reporting built in.
Proofpoint or Mimecast out front? We query the Microsoft directory behind it — confirming mailboxes competitors label “catch-all” and give up on.
We never dress a guess up as “valid”. Catch-alls are labelled catch-all with a reason — so nothing bounces by surprise.
Every address runs down the stack and stops the moment something is proven.
Format, MX records, disposable providers and dead domains — filtered instantly, for free.
Microsoft's account directory over HTTPS. Fast, accurate, and unaffected by mail gateways.
A live conversation with the mail server, with a control test that exposes catch-all domains.
Valid, invalid or catch-all — always with the reason behind it.
Grab a key from your dashboard and call the API from anywhere. JSON in, JSON out — no SDK required.
Read the docs$ curl -X POST https://xomexo.com/api/v1/verify \
-H "X-API-Key: ev_live_..." \
-d '{"email":"sarah.chen@northwind.io"}'
{
"email": "sarah.chen@northwind.io",
"status": "valid",
"checked_by": "microsoft",
"quota_remaining": 99
}Free account · 100 checks a day · no card required