See who handles a domain's email.
Enter a domain to see its MX records in priority order, and which email provider or security gateway runs each server.
Free, no signup. Unknown answers never count against you in the app.
How the check works
We query DNS
We ask the domain's DNS for its MX records, the list of servers that receive its email.
We sort by priority
Senders try the lowest number first, so that's the order we show them in.
We name the provider
We match each server to the company behind it, such as Google Workspace, Microsoft 365, Zoho, Proofpoint or Mimecast.
What the answers mean
- Receives mail
- The domain has MX records and can receive email.
- No MX records
- The domain exists but has no mail server set up. Email to it will bounce.
- Domain not found
- The domain doesn't exist in DNS. Check for a typo.
- Lookup failed
- The domain's DNS servers didn't answer in time. Try again shortly.
Questions
What is an MX record?
A DNS record that tells other servers where to deliver email for a domain. A domain can have several, each with a priority number.
Why does the provider matter?
Different providers answer verification checks differently. Security gateways like Proofpoint and Mimecast often hide whether a mailbox exists, which is why BounceOwl shows the provider on every result.
Does an MX record mean an address is real?
No. It only means the domain can receive mail. To know if a specific mailbox exists, use the free email checker.
Check your next list before it costs you a domain.
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