MxToolbox vs Qualys Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

MxToolbox

0.0 (0 reviews)

MxToolbox provides a comprehensive suite of diagnostic tools and monitoring services to help you maintain healthy email delivery and resolve complex DNS or server configuration issues quickly.

Starting at Free
Free Trial 30 days
VS

Qualys

0.0 (0 reviews)

Qualys is a cloud-based security platform that helps you identify vulnerabilities, ensure compliance, and protect your entire IT infrastructure from cyber threats through a single, integrated dashboard.

Starting at --
Free Trial 30 days

Quick Comparison

Feature MxToolbox Qualys
Website mxtoolbox.com qualys.com
Pricing Model Freemium Custom
Starting Price Free Custom Pricing
FREE Trial ✓ 30 days free trial ✓ 30 days free trial
Free Plan ✓ Has free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment cloud saas mobile
Integrations Slack Microsoft Teams PagerDuty Zapier ServiceNow Splunk Jira AWS Microsoft Azure Google Cloud Slack IBM QRadar CrowdStrike Microsoft Teams
Target Users small-business mid-market enterprise mid-market enterprise
Target Industries finance healthcare technology
Customer Count 0 0
Founded Year 2004 1999
Headquarters Austin, USA Foster City, USA

Overview

M

MxToolbox

MxToolbox is your go-to platform for diagnosing and monitoring email delivery and infrastructure health. You can perform instant lookups for MX records, DNS configurations, and blacklist status to identify why your emails might be landing in spam folders. It simplifies the technical complexity of email protocols like SPF, DKIM, and DMARC by providing clear, actionable reports that show you exactly what needs fixing.

You can also set up automated monitoring to get alerted the moment your domain appears on a blacklist or if your mail server goes offline. This proactive approach helps you protect your brand reputation and ensures your critical communications always reach their destination. Whether you are an IT professional managing multiple domains or a small business owner troubleshooting a single mail server, the platform provides the visibility you need to keep your email systems running smoothly.

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Qualys

Qualys provides you with a unified view of your entire IT environment, from on-premise systems and endpoints to clouds and mobile devices. You can automatically discover every asset in your network and identify security gaps before attackers find them. The platform simplifies the complex task of managing vulnerabilities by prioritizing the most critical risks based on real-time threat intelligence, allowing your team to focus on what matters most.

You can also automate your compliance audits and ensure your systems meet industry standards like PCI DSS or HIPAA without manual spreadsheets. Because it operates as a cloud-based service, you don't have to manage hardware or software updates. It scales effortlessly with your business, whether you are securing a small office or a global enterprise with thousands of remote endpoints.

Overview

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MxToolbox Features

  • Blacklist Monitoring Check your IP or domain against over 100 blacklists and receive instant alerts if you are ever listed.
  • DNS Lookups Perform comprehensive lookups for MX, A, and TXT records to verify your server is configured correctly.
  • DMARC Reporting Analyze your DMARC data to see who is sending email on your behalf and block unauthorized spoofing attempts.
  • Mail Server Diagnostics Test your mail server's SMTP connection to identify performance bottlenecks or security vulnerabilities in your setup.
  • SPF & DKIM Validation Verify your email authentication records are valid so major providers like Google and Outlook trust your messages.
  • Domain Health Reports Run a single check to see a complete overview of your domain's technical health and security status.
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Qualys Features

  • Asset Inventory. Discover and categorize every device on your network automatically so you never have to worry about blind spots.
  • Vulnerability Management. Scan your systems continuously to find security weaknesses and get actionable instructions on how to fix them quickly.
  • Threat Prioritization. Focus your efforts on the vulnerabilities most likely to be exploited using real-time data and risk scoring.
  • Patch Management. Deploy software updates and security patches directly from the console to remediate vulnerabilities across your entire fleet.
  • Compliance Monitoring. Automate your configuration checks and generate audit-ready reports to prove you meet internal and external regulatory requirements.
  • Cloud Security. Secure your public cloud workloads in AWS, Azure, and Google Cloud with specialized tools for container and serverless environments.

Pricing Comparison

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MxToolbox Pricing

Free
$0
  • Unlimited manual lookups
  • 1 Blacklist monitor
  • Weekly health reports
  • Basic DNS diagnostics
  • Community support access
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Qualys Pricing

Pros & Cons

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MxToolbox

Pros

  • Fast and reliable DNS lookup results
  • Comprehensive coverage of global email blacklists
  • Easy to understand DMARC report visualizations
  • Generous free tier for basic troubleshooting
  • Proactive alerts prevent long-term delivery issues

Cons

  • Interface feels dated compared to modern tools
  • Steep pricing jump for professional tiers
  • Learning curve for interpreting technical DNS data
A

Qualys

Pros

  • Extensive library of vulnerability signatures updated daily
  • Centralized dashboard provides excellent visibility across assets
  • Cloud-native architecture eliminates the need for local servers
  • Highly accurate scanning with very low false-positive rates

Cons

  • Interface can feel complex for new security users
  • Reporting engine requires a learning curve to master
  • Pricing can be high for smaller organizations
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