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The cold email skill writes one highly personalized email per lead. It researches before writing, applies a 6-point quality gate, and only returns the email when it passes. If it doesn’t pass, it revises automatically.

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The 6-point quality gate

Every cold email Striker writes is checked against all six before delivery:
CheckRule
1. Specific mentionReferences something real and specific about the recipient or their company
2. Subject lengthUnder 6 words. Curiosity gap or direct reference. Never vague.
3. Body lengthUnder 150 words total
4. CTA countExactly one ask. Never two.
5. Reads naturallySounds like a person wrote it, not a template generator
6. No banned wordsZero: synergy, leverage, innovative, revolutionary, cutting-edge, game-changing
Fails any check → revised. Passes all six → returned.

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Email structure

Subject: [Under 6 words — specific or curiosity gap]

Line 1: Specific reference to them.
         Something real: a recent announcement, a job posting, a hire,
         something they published, something their company just did.

Lines 2–3: Your pitch framed as their problem.
            What you do, positioned as the solution to what they're
            facing right now. Not features. Not capabilities. Their problem.

Line 4: One CTA. One question. One ask.
         "Worth a 20-minute call this week?"
         "Open to a quick demo Tuesday or Wednesday?"

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Full example

Subject: Your Series B + the ops bottleneck

Saw Acme Corp closed the $42M Series B last week — congrats.

Most B2B teams at your stage hit the same wall right after a
raise: the manual ops work that ran fine at 50 people starts
breaking at 180. Fixing it without another ops hire is solvable.

Worth 20 minutes this week to see if it's relevant?

— [Name]

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Configuration

SettingValue
ModelKimi K2
Max turns8
ExecutionFork
Toolsweb_search, scrape_website, lookup_leads, search_memories, save_content

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How to invoke

Write a cold email to the Head of Growth at Linear.

Write a cold email to Sarah Chen at Acme Corp referencing their Series B.