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

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

Updated May 2026 8 min read

GlockApps

0.0 (0 reviews)

GlockApps is an email deliverability and security platform that provides inbox placement testing, spam filter analysis, and DMARC monitoring to ensure your marketing emails reach your subscribers' primary inboxes.

Starting at Free
Free Trial NO FREE TRIAL
VS

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

Quick Comparison

Feature GlockApps MxToolbox
Website glockapps.com mxtoolbox.com
Pricing Model Freemium Freemium
Starting Price Free Free
FREE Trial ✘ No free trial ✓ 30 days free trial
Free Plan ✓ Has free plan ✓ Has free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment saas cloud
Integrations SendGrid Mailchimp Amazon SES Mailgun Postmark Google Postmaster Slack Telegram Slack Microsoft Teams PagerDuty Zapier
Target Users small-business mid-market enterprise small-business mid-market enterprise
Target Industries
Customer Count 0 0
Founded Year 2010 2004
Headquarters Kyiv, Ukraine Austin, USA

Overview

G

GlockApps

GlockApps helps you solve the frustrating problem of emails disappearing into spam folders or being blocked by providers. You can run comprehensive delivery tests across major providers like Gmail, Outlook, and Yahoo to see exactly where your messages land before you hit send on a major campaign. The platform identifies specific technical issues with your authentication or content that might be triggering spam filters.

Beyond one-time testing, you can monitor your sender reputation and DMARC compliance in real-time to protect your domain from spoofing. It provides actionable reports that tell you how to fix IP blacklisting and DNS configuration errors. Whether you are a solo marketer or a high-volume sender, the platform gives you the visibility needed to maintain high open rates and protect your sender authority.

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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.

Overview

G

GlockApps Features

  • Inbox Placement Tests See exactly which folder your email lands in across 50+ different international mailbox providers and ISP filters.
  • Spam Filter Analysis Run your content through major filters like SpamAssassin and Barracuda to identify keywords or links that trigger blocks.
  • DMARC Analytics Monitor your domain's email traffic and protect your brand from phishing by ensuring only authorized senders use your domain.
  • Uptime Monitoring Receive instant alerts if your website or mail server goes down so you can minimize downtime and lost sales.
  • IP Blacklist Tracking Track your sending IP addresses against dozens of real-time blacklists and get notified immediately if you are flagged.
  • Automatic Seed List Integrate testing directly into your workflow by sending to a dedicated list of seed accounts for automated reporting.
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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.

Pricing Comparison

G

GlockApps Pricing

Free
$0
  • 3 Inbox Email Tests
  • DMARC Analytics (10k messages)
  • Basic HTTP/TCP monitors
  • Instant email alerts
  • Comprehensive spam reports
M

MxToolbox Pricing

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

Pros & Cons

M

GlockApps

Pros

  • Highly accurate inbox placement data across global ISPs
  • Detailed technical breakdowns of DNS and authentication errors
  • Easy integration with popular ESPs like SendGrid and Mailchimp
  • Valuable free tier for occasional testing needs

Cons

  • Interface can feel overwhelming for complete beginners
  • Credit-based system requires careful management of usage
  • DMARC reports take time to populate data
A

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
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