
UptimeRobot
Pingdom
EasyDMARC
HetrixTools
dmarcian
Mail Tester
Uptime Kuma
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.

Sucuri Security Scanner
Mozilla Observatory
Security Headers
Hardenize
HTTP Observatory
Qualys SSL Server Test
Check HTTPS, TLS certificates, security headers, DNS and email authentication (SPF, DMARC, DKIM) for free, with evidence and a prioritized fix list.
Which is more popular?
Based on our record, MxToolBox seems to be more popular. It has been mentioned 201 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mxtoolbox.com | primedevforce.com |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
MxToolBox is highly recommended for IT professionals, network administrators, email server administrators, and anyone responsible for maintaining the health and security of network systems. It is also beneficial for businesses of all sizes that rely on email communication and need to ensure their servers and domains are functioning correctly and not blacklisted.
No analysis of Prime Dev Force Security yet.
Walkthroughs and reviews on video.
Episode 201 - Tools, Tips and Tricks - MXToolbox.com
No Prime Dev Force Security videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MxToolBox and Prime Dev Force Security.
Prime Dev Force Security's answer:
The free check needs no account and takes seconds. Every finding explains why it was flagged and how to fix it, and the scoring method is published. When you want more, Pro adds daily monitoring with Slack, Discord or webhook alerts for $12/month, and Agency adds branded client reports for 30 domains at $49/month. It is honest about its scope: an outside-in configuration check, not a penetration test.
Prime Dev Force Security's answer:
It checks web and email security in one report. Most free tools cover headers, or TLS, or DMARC; Prime Dev Force checks HTTPS, TLS, security headers, DNS and SPF/DKIM/DMARC together, and shows the evidence, severity and confidence behind every finding. The result is a ranked fix list, not just a grade.
Prime Dev Force Security's answer:
Small business owners, developers and freelancers who run their own websites, and agencies who look after many client sites and need to show clients what was fixed.
Prime Dev Force Security's answer:
Small business owners, developers and freelancers who run their own websites, and agencies who look after many client sites and need to show clients what was fixed.
Prime Dev Force Security's answer:
Share your experience with using MxToolBox and Prime Dev Force Security. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Did you do blacklist (and other) checks with https://mxtoolbox.com/ ? - Source: Hacker News / 26 days ago
Made the switch to self-hosted https://mailu.io (on k8s) 2 years ago when Gandi announced the deprecation of their free plan. Happy after IP was off most blocklists, but setup was kinda rough - https://mxtoolbox.com is your friend. - Source: Hacker News / over 1 year ago
I used these tools in the past: https://mxtoolbox.com/ https://www.mail-tester.com/. - Source: Hacker News / over 2 years ago
Tracking Prime Dev Force Security since Nov 2026.
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With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
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The Mozilla Observatory is a project designed to help developers, system administrators, and security professionals configure their sites safely and securely.
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Quickly and easily assess the security of your HTTP response headers.
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