MX record lookup.
See the mail servers behind any domain, sorted by priority, with the email provider named. A live read of the domain’s DNS.
What MX records tell you
MX records are the signpost for a domain’s incoming mail. They name the servers that accept email for the domain and the order to try them in. Look one up and you learn who runs a company’s email, whether that is Google Workspace, Microsoft 365, or a specialist gateway like Proofpoint or Mimecast. It is a fast way to profile a prospect’s stack before you reach out.
One thing MX records do not tell you is anything about the mail you send. They govern what a domain receives. Your own sending reputation is a separate matter, decided by how your mailboxes are set up and how you send from them.
Your deliverability is a sending problem
Checking a domain’s MX is useful research, but it will not move a single cold email closer to a reply. That comes down to your sending infrastructure: authenticated domains, mailboxes warmed on real Google and Microsoft inboxes, and rotation that spreads volume so no inbox gets burned. HotHawk runs all of it, which is how teams push 40,000 emails a day and more without wrecking their domains.
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Frequently asked
What is an MX record?
An MX (mail exchange) record is the DNS entry that tells the internet which servers receive email for a domain. Each MX record has a priority number, and sending servers try the lowest number first. Look up any domain and you can see who runs its email: Google Workspace, Microsoft 365, or something else.
How do I find the MX records for a domain?
Enter the domain above and this tool queries its live DNS and lists every MX record, sorted by priority, with the provider named where we can identify it. It reads the same records a sending mail server reads, so what you see is current and authoritative.
What does the priority number mean?
Lower is higher priority. A sending server tries the MX record with the lowest priority value first, and only falls back to higher numbers if that server is unreachable. Two records with the same priority share the load. It has nothing to do with the quality of the mail, only the delivery order.
Do MX records affect cold email sending?
MX records govern mail you receive, not the reputation of mail you send. For cold outreach, what matters is your sending setup: authenticated domains, warmed mailboxes and sensible volume. Checking a prospect’s MX can tell you which provider they use, but your own deliverability is decided by how you send, which is what HotHawk handles.