Cold email deliverability auditor for B2B founders
Founders blast cold email straight to spam without knowing why. A one-scan auditor that grades domain setup and rewrites the worst spam triggers.
The problem
Early B2B founders run outbound without configuring SPF, DKIM, DMARC or warming domains, so campaigns land in spam. They discover it weeks later after burning a domain reputation and a lead list.
Who has this pain
Pre-seed and seed B2B founders doing their own outbound
Why now
Gmail and Yahoo tightened bulk-sender rules, every founder is told to do outbound, and reputation damage is now faster and harder to reverse.
Source evidence
3 pieces of attributed evidence from public sources.
- Hacker News1 month agoSource
All my cold emails go to spam and I don't know why
Set up a new domain, sent 50 emails, all spam. No idea if it's DNS, content, or warmup. Want one tool that just tells me.
- Reddit1 month agoSource
Burned my main domain doing cold outreach
Reputation tanked, now even my normal email lands in spam. Wish something had warned me before I started.
Similar businesses making money
Real companies in adjacent spaces, what they charge, and where this idea wedges in differently. Each links out so you can see them for yourself.
Sending suites are at seven figures monthly; warmup tools confirm willingness to pay for deliverability. The wedge is the free diagnostic that converts to monitoring.
Instantly / Smartlead
Cold email + deliverability
Founder revenue posts put these tools in seven figures monthly, proving deliverability is monetizable.
MailReach / Warmup tools
Inbox warmup
Adjacent paid tools confirm demand for fixing deliverability specifically.
Where this could wedge in
Ship the free graded audit as a viral wedge; gate ongoing monitoring behind $39/mo.
Revenue risks
Low standalone WTP for a one-time audit. Convert to recurring monitoring and inbox-placement tests.
Suggested MVP and monetization
Suggested MVP
Enter a sending domain and a sample email; return a graded report on DNS auth, blacklist status, and the top spam-trigger phrases with rewrites.
Monetization model
$0 audit, $39/mo monitoring + inbox-placement tests
Discussion
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