
MxToolBox
dmarcian
Dnsstuff
EasyDMARC
PowerDMARC
DNSChecker.org
DMARCLY
Free email deliverability scanner - checks SPF, DMARC, DKIM, MX, blacklists and domain/SSL expiry, explains every problem in plain English and generates the exact DNS record to fix it. Paid DMARC report monitoring for teams and MSPs.

SourceForge.net: ShellNewHandler details page

Which is more popular?
Based on our record, ShellNewHandler seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dnsdoctor.dev | sourceforge.net |
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| Company | Startup from Ukraine · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Paste a domain and get an instant diagnosis of SPF, DMARC, DKIM, MX, DNS, blacklist and domain/SSL expiry. Every problem comes with a plain-English explanation and the exact copy-paste DNS record to fix it, generated by a validating engine rather than an AI guess. Free, no signup: Domain scanner...
No description of ShellNewHandler yet.
What each product offers, as listed by its team.


No features have been listed yet.
An editorial look at what each product does well and who it suits.


No analysis of DNSDoctor.dev yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DNSDoctor.dev and ShellNewHandler.
DNSDoctor.dev's answer
The fix records are generated by a deterministic engine that validates them against the actual RFC grammar and the 10-lookup limit. The AI only writes the plain-English explanation; it never writes the record itself. Most tools either show you charts and leave the fix to you, or let a language model guess at DNS records, which fails silently when the guess is wrong. We also check things the DMARC-only tools skip: blacklists, reverse DNS, domain and SSL expiry.
DNSDoctor.dev's answer
The free scan needs no signup and gives you the full picture in one page, with the exact record to paste for each problem. The paid side answers the question most report dashboards leave open: is it safe to move to p=reject yet? It reads your DMARC reports, tracks every sending source, and tells you when the evidence supports the next policy step. One flat plan, no per-message metering, no sales call.
DNSDoctor.dev's answer
Small business owners and IT folks whose email quietly lands in spam, sysadmins who want DMARC enforcement without reading XML, and MSPs managing email auth across many client domains. Also works for AI agents: there is a REST API and an MCP server, so you can run scans from your own tools.
DNSDoctor.dev's answer
Side project by a founder who manages domains for a few companies he supports. The pattern kept repeating: marketing signs up for some new tool, it starts sending as the domain, nobody added it to SPF, and mail disappears until a customer complains. Raw DMARC reports technically contain the answer, but nobody reads gzipped XML. So this became the tool: scan, get the exact record to fix, and monitoring that flags a new sender the day it appears.
DNSDoctor.dev's answer
Python does the heavy lifting, with the DMARC report pipeline built on proven open-source parsing libraries rather than being reinvented. The part that matters is architectural: record generation is plain deterministic code that validates against the RFC grammar, and the AI layer is only allowed to write explanations, never records.
Share your experience with using DNSDoctor.dev and ShellNewHandler. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking DNSDoctor.dev since Jul 2026.
Use Shell New Handler. Run the portable app and simply untick the items you don't want to appear in your new context menu. Source: about 4 years ago
I've always used ShellNewHandler for this. It's a really simple portable utility that allows you to remove most of the items from that menu. Tested it out on Windows 11 and it's still compatible. Source: over 5 years ago
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