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Folderly Lens - Domain health analysis for high performance email campaigns

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Most people are running email campaigns with damaged domains and they don't know it. Now you can find out quickly and easily. Folderly Lens checks public DNS, authentication, MX, IP rDNS, and blacklist signals, then returns a KILL / REHAB / KEEP verdict with a copyable fix plan. No signup, no mailbox access, no test sends.

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Maker
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Hey Product Hunt :wave: I'm Vlad, Founder of Folderly. We've spent years helping sales teams fix deliverability problems after they've already killed their sender reputation and the most painful cases are always the same: someone bought 20+ sending domains from a reseller, assumed they were isolated, and found out they weren't when reply rates collapsed. We thought we'd put together a simple tool that could help. Folderly Lens exists because that diagnosis used to require either a consultant or painful manual DNS spelunking. Now you paste your domain/IP list, and in seconds you get a per-asset KILL / REHAB / KEEP verdict backed by live SPF, DMARC, DKIM, MX, rDNS, and blacklist checks. No mailbox access, no API keys, no test sends. We built this for outbound agencies and sales teams running multi-domain estates who need an answer they can actually act on. The first full audit is free, and we've already run it on a 90-domain client estate where we found 17 SURBL-listed domains the team had no idea about. Would love your feedback and if you're running cold outbound, drop your estate in and let us know what the scanner surfaces. :pray:

Love it. For a multi-domain estate this is super valuable.

Maker

 Appreciate your comment, that whs the purpose behind creating the product!

Love how clean the spam words checker is, the instant feedback without any clutter is exactly what I needed when auditing campaigns.

Maker

 I appreciate you sharing your feedback, we do work hard to deliver seamless experience.

Finally tried Folderly for my newsletter and the spam words checker flagged a couple of phrases I would have missed. Nice to have SPF and DMARC generators right there too instead of digging through docs.

Maker

 Glad to hear you found it useful! That's exactly why we built Folderly Lens - sometimes it's the small details, like a risky phrase or a missing DNS record, that have the biggest impact on deliverability. We're also big believers that essential tools like SPF and DMARC generators should be just a click away, not hidden somewhere deep in documentation. Thanks for trying Folderly and for sharing your experience! 🚀

Ran a quick test on my SPF records and it flagged a missing include that I completely missed for months. Clean layout, fast results, genuinely useful for anyone juggling email deliverability headaches.

Maker

 Glad to hear Lens caught something valuable! SPF records can be surprisingly tricky, and even small misconfigurations can have a significant impact on deliverability over time. We built Folderly Lens to surface exactly these kinds of hidden issues quickly and clearly. Thanks for giving it a try and for sharing your experience - feedback like this means a lot to us. 🚀

How does Folderly actually fix an issue once it flags a spam trigger or blacklist hit, does it offer hands-on help or just tell me what's wrong and leave the cleanup to me?

Maker

We appreciate your question - it's a great one. With Folderly, you'll never be left alone in the spam void. From day one, you'll be connected with a dedicated point of contact who will be happy to guide and support you every step of the way. In addition, a deliverability expert will continuously monitor your account and proactively step in if anything goes off track.

Does Folderly actually catch issues before sending, or does it only flag problems after your emails have already hit spam filters?

Maker

 Great question! Folderly is a unique platform that does both: it helps prevent your emails from landing in spam folders and assists in recovering your sender reputation if you've already encountered deliverability issues. Feel free to reach out to our CEO, Ana, to learn more: .

How does the AI actually decide when an email is at risk of being flagged before you hit send, and does it work with custom domains hosted outside the usual providers like Google Workspace or Microsoft 365?

Maker

 Great question! Our AI looks beyond traditional spam words and evaluates a combination of content patterns, authentication records (SPF, DKIM, DMARC), domain/IP reputation signals, and infrastructure health to identify potential deliverability risks before you hit send.

The DMARC record generator saved me a bunch of setup time, and the deliverability score gave me an honest look at what was actually breaking in my last campaign. Solid tool.

The spam word checker caught a few phrases I would have totally missed in my welcome email. Setup took a couple of minutes and the inbox placement test was genuinely useful for spotting issues before sending.

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