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Cold Email Crafter

Most cold emails get deleted in two seconds — not because the offer is bad, but because the email is obviously a template. The Cold Email Crafter writes the kind that earns a reply: 50-125 words, one ask, one sentence that couldn't be sent to anyone else.

What this skill does

Cold email has three instant-delete triggers and they all happen in the first two seconds: the email is obviously a template, it's about the sender not the recipient, or it's too long to evaluate quickly. The Cold Email Crafter avoids all three by building every email around the recipient and capping the whole thing at 125 words. If a draft crosses the limit, it gets rewritten — not extended with a warmer closing.

The structure is AIDA compressed for a 5-sentence container. Line 1 is the personalisation hook, and there are three tiers: something specific they said or wrote (strongest), something specific about their company (good), or an industry-plus-challenge frame (minimum viable). The skill applies the swap test before finalising — if you could replace the recipient's name and send the exact email to someone else, the personalisation is fake and the line gets rewritten.

Subject lines are treated as their own discipline. Cold email subject lines are not newsletter subject lines — they should be 3-7 words, lowercase often beats title case, and the company name almost never belongs in there. "quick question about attribution" beats "Partnership Opportunity from [Company]" every time because the first looks like a colleague wrote it and the second looks like a CRM did.

The output isn't just an email. You get three subject line options with one recommended, the email itself with word count, a per-line explanation of why each part works, and a Day 3 / Day 7 / Day 14 follow-up cadence — bump, pivot, breakup. Each follow-up has its own job. The pivot uses a completely different angle from the first email, because if they ignored the first frame, the second one needs to give them a new entry point, not the same pitch louder.

When this triggers

  • ·You're emailing one specific prospect and want a sniper version, not a blast
  • ·Your reply rate is under 2% and you suspect the template is the problem
  • ·You need a 5-email follow-up sequence that doesn't read as five 'just checking in' emails
  • ·You're moving from email to LinkedIn DM and the email-length version is killing replies
  • ·You want to know exactly which phrase in your draft is triggering the spam reflex

Example

Trigger

User: 'Want to email Sarah Chen, VP Marketing at [SaaS company], she posted last week about content attribution.'

Output

Subject: re: your attribution post Hi Sarah, Your post last week about last-touch bias nailed something I see constantly — most B2B marketing teams are making budget calls on data that's 40-60% incomplete and they don't know it. We helped [comparable company] find £180K in misattributed ad spend last quarter by reconstructing the multi-touch path. Worth a 15-min call to see if the same approach fits your stack? [Name] Word count: 67. Follow-ups: Day 3 bump (same thread), Day 7 pivot (new angle, new subject), Day 14 breakup.

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What you get

  • 138-line SKILL.md, ready to drop into ~/.claude/skills/
  • Tested through 3 Karpathy-loop iterations (versions v1.0.0 → v1.3.0)
  • Triggers automatically when relevant — no command to remember
  • Lifetime updates as the skill is refined further

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