MXToolbox
Email deliverability tools
DMARC software
DNS security solutions
Confidentiality software
Network security software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$129 per month
Free Trial unavailable
Free version
Small
Medium
Large
- Transportation and logistics
- Manufacturing
- Agriculture, fishing, and forestry
What is MXToolbox
MXToolbox is a set of email and DNS diagnostic and monitoring tools used to troubleshoot mail flow and improve deliverability. It is commonly used by email administrators, IT operations, and security teams to check DNS records (MX, SPF, DKIM, DMARC), blacklist status, and SMTP connectivity, and to receive alerts when issues occur. The product combines on-demand lookups with subscription monitoring and reporting, with a focus on operational troubleshooting rather than campaign creation or outbound sending.
Broad DNS and mail diagnostics
MXToolbox provides a wide range of lookups and tests for DNS and email infrastructure, including MX, SPF, DKIM, DMARC, SMTP, and blacklist checks. This breadth supports root-cause analysis when messages bounce, get deferred, or land in spam. It is oriented toward infrastructure verification rather than marketing workflow features found in sending platforms.
Monitoring and alerting workflows
The platform offers continuous monitoring for DNS and email-related records and endpoints, with alerting when changes or failures occur. This helps teams detect misconfigurations, expirations, or reputation issues earlier than ad-hoc testing. It fits operational use cases where uptime and configuration drift matter more than campaign analytics.
Actionable deliverability troubleshooting
MXToolbox surfaces common deliverability blockers such as blacklist listings, missing authentication records, and misconfigured DNS. The toolset supports quick validation during incident response and change management (e.g., domain migrations, new mail gateways). It complements email sending and testing tools by focusing on the underlying domain and mail server posture.
Not a sending or marketing suite
MXToolbox does not function as an email service provider for bulk sending, list management, or campaign automation. Organizations still need separate systems for outbound delivery, segmentation, and marketing performance reporting. Teams evaluating it against end-to-end email platforms may find feature overlap limited to diagnostics.
DMARC depth varies by plan
While MXToolbox supports DMARC checks and related reporting, advanced DMARC analytics and workflow features can depend on subscription level. Some organizations may require more specialized DMARC investigation, forensic workflows, or large-scale reporting capabilities than a general diagnostics platform provides. Fit can vary based on DMARC volume and compliance requirements.
Primarily technical-user oriented
The interface and outputs are designed for IT and security practitioners and can be less approachable for non-technical stakeholders. Translating findings into executive-ready risk or compliance reporting may require additional effort. Organizations seeking guided remediation or policy governance may need complementary processes or tools.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Free | $0/month | Blacklist monitoring (weekly), 1 domain, 1 monitor, access to free lookup tools and basic blacklist/DMARC checks. |
| Delivery Center | $129/month | 64 monitors (hourly adaptive), covers up to 5 domains, ~500,000 monthly message volume; inbox placement analysis, recipient complaint reporting, email delivery performance reports, SPF/DKIM/DMARC configuration analysis, adaptive blacklist monitoring, inbound & outbound mailflow monitoring, domain impersonation protection. |
| Delivery Center Plus | $399/month | 256 monitors (real-time adaptive), covers up to 5 domains, ~5,000,000 monthly message volume; all Delivery Center features plus advanced email threat investigation tools, SPF flattening, domain impersonation protection, dedicated email support. |
Seller details
MXToolbox, Inc.
Austin, Texas, US
2004
Private
https://mxtoolbox.com/
https://x.com/mxtoolbox
https://www.linkedin.com/company/mxtoolbox/
