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Should I Use MX Lookup Tool - Check your DNS MX Records online - MxToolbox?

mxtoolbox.com·Analyzed 1 week ago··Based on 10 sources

Check your DNS MX Records online

Verdict

Worth it

The free MX, DNS, and blacklist lookups are a no-brainer for anyone running email on their own domain.

Confidence: Medium

Pay nothing unless you specifically need automated deliverability monitoring.

Free DNS/MX diagnostic that admin forums treat as the default first check. Use it free; pay only if email downtime costs you.

Key stats

  • Value for money: 5/5

    Rating

  • $0

    Starting price

  • 10

    Sources

  • Analyzed

  • Value for money: 5/5. Core lookups cost nothing
  • Ease of use: 4/5. Instant, but raw output assumes DNS literacy
  • Feature depth: 3/5. Lookups, headers, blacklists; monitoring is basic
  • Support quality. No evidence in reviewed sources
  • Security posture. No security page or findings in sources
  • Free Core lookups Web-based checks, no purchase needed
  • 10+ communities Forum citations Microsoft Q&A, Reddit, Spiceworks, cPanel, Plesk, Cloudflare
  • DNS + email diagnostics Toolkit scope MX records, blacklists, header analysis

Pricing

Free lookups

$0

  • MX, DNS, and blacklist checks
  • Email header analysis
Best for and not for

Best for

  • IT admins debugging email delivery
  • Domain owners verifying DNS changes
  • Blacklist checks when mail lands in spam
  • Post-migration email troubleshooting

Not for

  • Non-technical users — raw DNS records, no hand-holding
  • Anyone expecting it to fix email — diagnostics only
  • Buyers shopping a full email-security platform
  • Teams wanting continuous monitoring without paying

Biggest gotcha

  • mediumFree checks are one-off and manual; continuous monitoring is the paid upsell¹
  • mediumPaid tier pricing was not visible in sources reviewed — verify before committing¹
  • lowVendor site shows no security page found; little public posture detail⁹

Pros

  • Free, instant MX record checks directly in the browser¹
  • Default first-check recommended across Microsoft, cPanel, and Plesk forums²
  • Checks blacklist status alongside mail records³
  • Includes email header analysis tooling
  • Cited in security and troubleshooting guides as a reference tool10

Cons

  • Diagnostic only — it tells you what is broken, fixes nothing¹
  • Raw record output assumes you can read DNS¹
  • No public pricing or security documentation surfaced in sources reviewed⁹

Security

No known vulnerabilities found in the sources reviewed.

What users say

Admins across Microsoft, cPanel, Plesk, and Reddit communities treat MxToolbox as the default first step when email breaks.

“Run your domain name through the”
Reddit, r/sysadmin
“Does you DNS records pass the MX t”
Reddit, r/cpanel

Alternatives

Compare MX Lookup Tool - Check your DNS MX Records online - MxToolbox with each alternative.

Methodology

Based on 40+ public sources; heavy forum adoption, thin on pricing and security detail.

Sources

  1. MxToolbox: MX Lookup Tool - official sitemxtoolbox.com
    official
  2. How do I check the MX record configuration - Microsoft Q&Alearn.microsoft.com
    review
  3. Emails marked as spam - Reddit r/sysadminreddit.com
    review
  4. Issues with email deliverability - Reddit r/cpanelreddit.com
    review
  5. Testing Exim mail server - cPanel support forumsupport.cpanel.net
    review
  6. Undelivered Mail Returned to Sender - Plesk forumtalk.plesk.com
    review
  7. Email is not working on my .app tld - Cloudflare communitycommunity.cloudflare.com
    review
  8. Understanding MX records - Spiceworks communitycommunity.spiceworks.com
    review
  9. MxToolbox security pagemxtoolbox.com
    security
  10. Testing DNS records for errors - Mediummedium.com
    news

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