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Best Productivity ResourcesBy Shushant LakhyaniVerified creator

Web App

MxToolbox

Free DNS, MX, blacklist and email deliverability lookups.

Visit MxToolbox4.5

  • Rating

    4.5 / 5

  • Pricing

    Freemium

  • Difficulty

    Intermediate

  • Works on

    Web

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What is MxToolbox?

MxToolbox runs quick checks on MX records, DNS, SPF, DKIM, DMARC, blacklists and mail server health from one SuperTool search box. The lookups are free, while paid plans add ongoing monitoring, alerts and DMARC reporting for businesses.

Pros: what MxToolbox does well

  • Many email checks in one place
  • Free lookups without an account
  • Clear pass and fail results

Cons: where it falls short

  • Monitoring and alerts are paid
  • Busy interface with upsells

Who MxToolbox is for

Anyone troubleshooting email delivery or DNS for a domain.

Who can skip it

People who never manage a domain or mail server.

MxToolbox alternatives

Not sold on MxToolbox? These do a similar job, and each card says what it has in common.

All Email resources

Formspree

Focus: forms, static sites and backend. Also in Workflows and Email, like MxToolbox. Same 4.5 rating.

Web AppFree planWeb
4.5Visit

Sendra

Focus: email, figma and html. Also in Email and Workflows, like MxToolbox. Rated 4.4 (MxToolbox: 4.5).

Web AppFree planWeb
4.4Visit

DNS Checker

Focus: networking, domains and web tools. Shares dns with MxToolbox. Free (MxToolbox: Freemium). Same 4.5 rating.

Web AppFreeWeb
4.5Visit

who.is

Focus: whois, domains and lookup. Shares dns with MxToolbox. Rated 4.4 (MxToolbox: 4.5).

Web AppFree planWeb
4.4Visit

CyberChef

Focus: data conversion, encoding and developer tools. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Adds Offline. Rated 4.8 (MxToolbox: 4.5).

Web AppFreeWeb, Offline
4.8Visit

LinearFeatured, verified

Focus: issues, sprints and engineering. Also in Workflows, like MxToolbox. Adds macOS and Windows. Rated 4.8 (MxToolbox: 4.5).

Web AppFree planWeb, macOS
4.8Visit

Free alternatives to MxToolbox

Want to spend nothing? These free picks cover similar ground.

regex101

Focus: regex, developer tools and debugging. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Rated 4.8 (MxToolbox: 4.5).

Web AppFreeWeb
4.8Visit

BentoPDF

Focus: pdf tools, merge pdf and privacy. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Rated 4.7 (MxToolbox: 4.5).

Web AppFreeWeb, Cross-Platform
4.7Visit

Coolify

Focus: self-hosting, deployment and hosting. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Rated 4.7 (MxToolbox: 4.5).

Web AppFreeWeb
4.7Visit

DevDocs

Focus: documentation, api reference and developer tools. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Adds Offline. Rated 4.7 (MxToolbox: 4.5).

Web AppFreeWeb, Offline
4.7Visit

draw.io

Focus: diagrams, flowcharts and uml. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Adds Windows, macOS and Linux. Rated 4.7 (MxToolbox: 4.5).

Web AppFreeWeb, Windows
4.7Visit

Grafana

Focus: dashboards, monitoring and metrics. Also in Workflows, like MxToolbox. Free (MxToolbox: Freemium). Adds Linux. Rated 4.7 (MxToolbox: 4.5).

Web AppFreeWeb, Linux
4.7Visit
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