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Free SPF, DKIM and DMARC checker that tells you exactly which record to publish.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | notspoofed.com | diffyn.com |
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In their own words, as submitted to SaaSHub.


notspoofed.com checks a domain's SPF, DKIM and DMARC records and tells you exactly what to publish to fix what's broken — not just that something is. No signup, and the domains you check are never recorded. SPF, counted properly. SPF permits ten DNS lookups. Past that, receivers give up and the...
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What each product offers, as listed by its team.


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


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Overall verdict
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing notspoofed.com and Diffyn.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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Check your DMARC, DKIM, and SPF settings. Stop bad actors from impersonating your domain in phishing attempts and enhance message delivery.
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GoDMARC is a cloud-based analytical tool that empowers enterprises to deploy DMARC quickly. It's designed specifically to fulfill the requirements, including Authentication of emails, Robust reporting, stopping phishing emails, and more.
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