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

Knowbe4
Proofpoint
Mails-Guard
Nuclino
Phish Me If You Can
SimplyPhish
Opsinel sends your employees realistic phishing emails and shows anyone who clicks a lesson about that same email. You see who did what.

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 | opsinel.com |
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What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
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 Opsinel yet.
Walkthroughs and reviews on video.
Episode 201 - Tools, Tips and Tricks - MXToolbox.com
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using MxToolBox and Opsinel. 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 / 15 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 Opsinel since Oct 2026.
When comparing MxToolBox and Opsinel, you can also consider the following products.


KnowBe4 provides Security Awareness Training to help you manage the IT security problems of social engineering, spear-phishing & ransomware.
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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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Proofpoint provides cloud-based email security, e-discovery and compliance solutions for companies to protect sensitive business data.
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Detect phishing instantly with our AI. Analyze your suspicious emails for free. No data stored.
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