I built an AI that writes cold email sequences — here's what 7 early users taught me

Hey IH 👋

I'm building 99 Agents — an AI tool that generates full 4-email cold outreach sequences for SDRs. You punch in prospect info + your product description, and it spits out a complete sequence with subject lines, send timing (Day 1, 3, 7, 14), and tone matching.

We just shipped two big upgrades:

Sequence Health Score — grades your output 0-100, flags spam triggers, weak CTAs, and AI-sounding phrases before you send
Cross-sequence diversity tracking — so SDRs running 50+ sequences don't get repetitive, detectable AI patterns
The interesting part: we banned 37 AI phrases, 29 buzzwords, and 17 formulaic CTAs from the generator itself — not just the scorer. The tool actively avoids sounding like AI.

7 real signups so far. Free tier gives you 5 sequences/day. Unlimited is $49/mo.

Would love feedback from anyone doing cold outreach — what would make you trust AI-written sequences enough to actually send them?
https://nine9agents.polsia.app/