MXToolbox is an IT Infrastructure Software tool that provides free network and diagnostic lookup tools. Founded in 2003, the tool enables technology professionals to identify and resolve a wide range of network infrastructure problems.

MXToolbox Platform

MXToolbox offers several free tools of different functionality and capability to allow technology professionals to troubleshoot and amend their email deliverability issues. The tool, which was founded in 2003 and acquired by J2 Global Inc. in 2016, can be used by individual technicians and companies worldwide. The system offers several tools, including but not limited to, blacklist solutions, mail flow monitoring, DNS lookup, and more. The tool is available in both a free and paid edition, depending on the user’s necessary functions and capabilities. The tool, while available to the general public, is typically used by IT professionals and administrators. The self-proclaimed “one-stop-shop” provides services in email and web security email continuity, email hosting, and internet security.

MXToolbox Screenshots

Review Summary

MXToolbox has 12 reviews on G2 Crowd, 1 of which came from within the last year.
Multiple reviewers highlight MXToolbox's:
  • Easier to admin
  • Better at support
  • Easier to set up
Most Recent MXToolbox Review
Trendy Toolbox
Reviewed On March 21, 2018
Monitoring clients IP and domain reputations, verifying MX, DKIM, DMARC, and SPF keys are installed and performing correctly


According to G2 Crowd Data, MXToolbox's main competitors in the Other IT Infrastructure space are:

Funding and Acquisition History

Headquartered in Austin, Texas, MXToolBox was founded in 2003. On January 14, 2016, J2 Global, Inc. acquired MXToolBox for an undisclosed amount. J2 Global, Inc. is a business technology services company headquartered in Los Angeles, California. It was acquisition 56 of 80 for J2 Global, Inc and their fourth of 2015 Q4. As of 2015, J2 Global Inc. had achieved 19 consecutive fiscal years of revenue growth.

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