MX Lookup Tool - Check your DNS MX Records online - MxToolbox vs Google Admin Toolbox

MX Lookup Tool - Check your DNS MX Records online - MxToolbox and Google Admin Toolbox both land on Worth it.

MX Lookup Tool - Check your DNS MX Records online - MxToolbox

mxtoolbox.com

Analyzed September 19, 2026

Worth it

Confidence: Medium

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

Read the full report

Google Admin Toolbox

toolbox.googleapps.com

Analyzed September 20, 2026

Worth it

Confidence: Medium

Google Workspace admins should bookmark this free diagnostic suite for quick MX, SPF, header, and DNS checks.

Read the full report

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MX Lookup Tool - Check your DNS MX Records online - MxToolbox versus Google Admin Toolbox
Compare	MX Lookup Tool - Check your DNS MX Records online - MxToolbox	Google Admin Toolbox
Verdict	Worth it	Worth it
Best for	IT admins debugging email delivery	Google Workspace admins
Who it's not for	Non-technical users . raw DNS records, no hand-holding	Non-Google Workspace mail admins . tools assume Google infrastructure
Privacy	No known public vulnerabilities found in the sources reviewed.^⁹	No known public vulnerabilities found in the sources reviewed.¹⁴
Support quality	No evidence in reviewed sources	No support desk; breakage threads go unanswered
Public sentiment	Admins across Microsoft, cPanel, Plesk, and Reddit communities treat MxToolbox as the default first step when email breaks.^³	Admins value the free convenience but repeatedly report false positives and doubts about the site's availability.¹⁵
Biggest gotcha	Free checks are one-off and manual; continuous monitoring is the paid upsell^¹	Verify Check MX warnings with MXToolbox or dig before changing DNS . false positives are reported repeatedly¹⁶

Pick MX Lookup Tool - Check your DNS MX Records online - MxToolbox when

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

When MX Lookup Tool - Check your DNS MX Records online - MxToolbox is not a fit

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

Pick Google Admin Toolbox when

Google Workspace admins
Quick MX/SPF sanity checks
Email header tracing
Domain recovery problems

When Google Admin Toolbox is not a fit

Non-Google Workspace mail admins . tools assume Google infrastructure
Teams wanting SLA-backed, monitored diagnostics
Deep DMARC and deliverability programs needing dedicated platforms
Anyone who cannot tolerate false-positive DNS warnings

Sources

MxToolbox: MX Lookup Tool - official sitemxtoolbox.com
official
How do I check the MX record configuration - Microsoft Q&Alearn.microsoft.com
review
Emails marked as spam - Reddit r/sysadminreddit.com
review
Issues with email deliverability - Reddit r/cpanelreddit.com
review
Testing Exim mail server - cPanel support forumsupport.cpanel.net
review
Undelivered Mail Returned to Sender - Plesk forumtalk.plesk.com
review
Email is not working on my .app tld - Cloudflare communitycommunity.cloudflare.com
review
Understanding MX records - Spiceworks communitycommunity.spiceworks.com
review
MxToolbox security pagemxtoolbox.com
security
Testing DNS records for errors - Mediummedium.com
news
Google Admin Toolbox . main pagetoolbox.googleapps.com
official
Check MX and SPF Records . ToolBox Google Appstoolbox.googleapps.com
official
Google Workspace diagnostic tools . Support & troubleshootingknowledge.workspace.google.com
official
Google Admin Toolbox product security pagetoolbox.googleapps.com
security
Is the Google Admin Toolbox's Check MX tool broken for ...reddit.com
review
Google Toolbox MX Warnings but DNS Looks Correctreddit.com
review