Best MXToolbox Alternatives in 2025: Find Your Perfect Email Testing Tool

June 5, 2025

MXToolbox has been a popular choice for DNS diagnostics and email delivery testing, but it's not the only option available. If you're looking for alternatives that offer better features, more affordable pricing, or a different approach, we've got you covered. Here's our honest comparison of the top MXToolbox alternatives.

What is MXToolbox?

MXToolbox is a comprehensive DNS and email delivery diagnostic tool that provides MX record lookups, blacklist checking, SMTP testing, and various network diagnostics. It offers both free tools and paid services for email delivery monitoring and management.

However, MXToolbox has some limitations that might make you look elsewhere:

Limited free features (only one free monitor, top 30 blacklists)
No AI-powered analysis or content recommendations
No accessibility testing features
Requires paid plans for advanced features
No personal email agent functionality
Focuses primarily on technical diagnostics rather than marketing insights
No comprehensive email content testing
Limited to DNS and deliverability diagnostics

Top MXToolbox Alternatives

MailMoxie - Our Top Pick

Recommended

MailMoxie revolutionizes email testing with AI-powered analysis that actually understands email marketing. Instead of just providing technical diagnostics, MailMoxie provides actionable recommendations to improve your emails and boost performance.

Key Features:

AI-Powered Analysis: Your personal email expert that understands marketing and transactional emails
Unlimited Email Tests: No monthly limits on testing your campaigns
50+ Spam Trigger Testing: Comprehensive analysis of spam triggers and deliverability issues
Advanced Accessibility Testing: WCAG 2.1 AA compliance testing for inclusive email marketing
Subject Line Optimization: AI-powered suggestions to improve open rates
Instant Results: Get detailed reports in seconds, not minutes
Personal Agent Email: Send emails to your own MailMoxie agent address
Comprehensive Testing: Beyond just technical diagnostics - content, accessibility, and optimization

Pricing:

Freeforever

Unlimited email tests, no credit card required

MXToolbox

MXToolbox provides comprehensive DNS diagnostics, email delivery testing, and network monitoring tools with both free and paid service options.

Key Features:

MX record lookups and DNS diagnostics
Blacklist checking and monitoring
SMTP testing and email delivery diagnostics
Network connectivity testing (ping, trace, TCP)
SPF, DKIM, and DMARC record checking
Inbox placement testing
Recipient complaints monitoring
Email delivery configuration management
Adaptive blacklist monitoring
Outbound and inbound mailflow monitoring

Pricing:

Free Plan:$0/month

Paid Plans:Contact for pricing

Limited free features • One free monitor • Top 30 blacklists only

Other Alternatives

DNS Checker

Free DNS lookup and diagnostic tool

Free (limited features)

WhatIsMyIPAddress

IP lookup and blacklist checking tools

Free (basic features)

IntoDNS

DNS health checking and diagnostics

Free (limited reports)

Why Choose MailMoxie Over MXToolbox?

AI-Powered Insights

While MXToolbox provides technical diagnostics, MailMoxie offers AI-powered recommendations that actually help you improve your emails and boost deliverability.

Comprehensive Email Testing

MailMoxie provides comprehensive email testing including content analysis and accessibility, while MXToolbox focuses primarily on technical DNS and deliverability diagnostics.

Marketing-Focused Approach

MailMoxie understands email marketing and provides actionable insights, while MXToolbox is more focused on technical infrastructure and diagnostics.

Unlimited Testing

MailMoxie offers unlimited email tests completely free, while MXToolbox's free plan is very limited and paid plans require contacting sales.

Final Verdict

While MXToolbox offers solid DNS and email delivery diagnostics, MailMoxie provides a more comprehensive, AI-powered solution that's focused on helping you improve your email marketing performance.

If you're looking for actionable insights to improve your email performance rather than just technical diagnostics, MailMoxie is the clear winner. Plus, with a 7-day free trial and no credit card required, there's no risk in trying it out.

Ready to Upgrade Your Email Testing?

No credit card required • Free forever

Disclosure: This comparison is based on publicly available information and our own testing. Pricing and features may change. We recommend trying multiple tools to find the best fit for your specific needs.