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

Sky Live HTTP Headers
WebSniffer
HTTP-Repeater (HTTP/s Live Headers) (Beta)
HTTP Header Analyzer
HTTP-TRACKER
Requestly
HTTP Header Spy
Modify Header Value (HTTP Headers) is a browser extension that allows you to add, modify or remove a header for any request to your preferred domains.

Which is more popular?
Based on our record, MxToolBox seems to be a lot more popular than Modify Header Value (HTTP Headers). While we know about 201 links to MxToolBox, we've tracked only 4 mentions of Modify Header Value (HTTP Headers).
Website, pricing, platforms and company facts side by side.
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| Website | mxtoolbox.com | mybrowseraddon.com |
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What each product offers, as listed by its team.


Possible disadvantages
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 Modify Header Value (HTTP Headers) 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 Modify Header Value (HTTP Headers). 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 / 5 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
Yep that started recently. I found a solution with the add-on Modify Header Value (HTTP Headers) , you need to add two rules:. Source: over 3 years ago
Going off of what a user said in the comments of another post complaining about this, you can get the old behaviour back by modifying the request headings. I've managed to do this using a Chrome extensions called Modify Header Value... Source: over 3 years ago
To change user agent on fenix (nighlty ,using custom collection )I use https://mybrowseraddon.com/modify-header-value.html It can also modify other header parameters . Source: over 4 years ago
When comparing MxToolBox and Modify Header Value (HTTP Headers), you can also consider the following products.

Free Website Uptime Monitoring
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Sky Live HTTP Headers is an open-source browser extension that visually displays HTTP requests and response headers from every website you visit.
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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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WebSniffer is an online tool to outlook HTTP request and response headers.
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FREE Uptime Monitoring + Server Monitoring + Status Page + Blacklist Monitoring!
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HTTP-Repeater (HTTP/s Live Headers) (Beta) is a browser extension that lets you capture browser requests and repeat the process in a loop automatically.
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