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MSTMail Security ToolsField guide · Omaha

Directory / DMARC, SPF, and DKIM

FreeFree tier checked

MXToolbox

Public DNS and mail lookups, including MX records and blacklist checks.

Visit MXToolboxHow this list is ordered

Verdict

MXToolbox will look up MX records for a domain in the browser. The page we loaded describes that lookup, diagnostics, and blacklist checks, and it did not ask for a card. We requested mxtoolbox.com/pricing and got HTTP 404, so this listing does not describe a paid plan.

Who it is for
Anyone who needs a quick look at MX records, blacklists, or mail DNS before buying a monitor.
Free tier
The public MX lookup on the homepage is free to run. No account wall was on the page we loaded. Checked 14 Oct 2026.
Pricing note
mxtoolbox.com/pricing returned HTTP 404. Paid monitoring, if it exists, is not confirmed here.
Categories
DMARC, SPF, and DKIMDomain and DNS monitoringFree checkers
Last verified
14 Oct 2026
Ownership
Independent of this directory.

What holds up

  • The lookup is on the homepage.
  • No price gate on the check we loaded.

What to watch

  • A pricing page was not there, so paid features are unknown.
  • It is a check, not a weekly report, unless you buy something we could not verify.

Alternatives

Other tools in this directory that do related work. Same ordering rules. A different job is called out in the verdict, not hidden.

Pages we checked