
DMARC Checker App
MailScore
Monitor and Implement DMARC
YourDMARC
Check your business domain’s public DMARC and SPF records free. Ongoing monitoring is free for one domain; $29/month covers up to five.

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 | taverlo.com | diffyn.com |
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In their own words, as submitted to SaaSHub.


Taverlo checks a business domain’s public DMARC and SPF records and explains the result in plain language. The free check needs no account or card. It shows what the domain publishes and what to review with the person who manages its email settings. It does not test inbox delivery or change DNS....
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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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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 Taverlo and Diffyn.
Taverlo's answer
Taverlo pairs a free public DMARC and SPF check with the evidence behind the result and one concrete next step. It is designed for the business owner and the person who manages their email settings to use together: eligible results include a copyable administrator handoff. The check needs no account or card, and it states its limits plainly—it reads public DNS records, does not change DNS, and does not claim to test inbox delivery.
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.
Taverlo's answer
Choose Taverlo when you want a focused public DMARC and SPF check that explains the finding, shows the supporting record, and gives you a practical next step without requiring an account. One-domain monitoring is free, and $29/month covers up to five domains. Choose a broader email-security platform instead if you need enterprise enforcement, a large domain portfolio, or a full deliverability suite.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Diffyn's answer:
React, Next.js, POSTGRESQL
Taverlo's answer
Taverlo is for people responsible for a business email domain—small-business owners, operations leads, and the IT or email administrator helping them. It is most useful when they need a quick public-record check, a clear handoff for a DNS change, or ongoing monitoring for a small portfolio of domains. It is not an inbox-placement test or a managed DNS service.
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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