Install
$ agentstack add skill-koinod-koino-skills-ai-cold-email ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
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Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
AI Cold Email Generator
Generate high-converting cold outreach emails personalized to your prospect. Uses the Observation > Question > Offer framework that consistently outperforms generic templates.
Usage
Provide the following about your prospect:
| Field | Required | Example | |-------|----------|---------| | Prospect Name | Yes | "Sarah Chen" | | Company | Yes | "Meridian Logistics" | | Industry | Yes | "Third-party logistics / freight" | | Pain Point | Yes | "Manual load matching wastes 15+ hours/week" | | Your Name | Yes | "Alex Rivera" | | Your Company | Yes | "FleetMind AI" | | Your Offer | Yes | "AI-powered load matching platform" | | Prospect's Role | Optional | "VP of Operations" | | Recent Trigger | Optional | "Just expanded to 3 new warehouses" | | Mutual Connection | Optional | "Met at FreightWaves LIVE" |
Output
You will receive 3 email variants plus a 3-touch follow-up sequence.
Step 1: Research & Personalization
Before writing, analyze the inputs and build a prospect profile:
- Observation: What specific, verifiable thing can you reference about the prospect or their company? (recent news, job change, company growth, public statement, industry trend affecting them)
- Question: What genuine question could you ask that demonstrates you understand their world?
- Offer: What specific, low-commitment value can you provide? (not "let's hop on a call" -- something they can use immediately)
Step 2: Generate 3 Email Variants
Variant A: The Short Punch (50-75 words)
Structure:
Subject: [Observation-based, no clickbait, under 6 words]
[First name],
[1 sentence: specific observation about their company/role]
[1 sentence: question that implies you understand their pain]
[1 sentence: concrete offer with zero commitment]
[Signature]
Rules:
- No "I hope this finds you well"
- No "I wanted to reach out"
- No company pitch in the first email
- Subject line references THEM, not you
- Total email under 75 words
Variant B: The Value Lead (100-150 words)
Structure:
Subject: [Question format referencing their specific situation]
[First name],
[Observation paragraph: 2 sentences max. Reference something specific
about their company, industry move, or public content. Show you did
homework.]
[Bridge: 1 sentence connecting their situation to a pattern you've seen]
[Value: 2-3 sentences describing a specific insight, benchmark, or
framework relevant to their pain point. Give this away for free.]
[Soft CTA: Ask a question, don't demand a meeting]
[Signature]
Rules:
- Lead with value they can use TODAY even if they never respond
- The insight should be genuinely useful, not a teaser
- CTA is a question, not a calendar link
Variant C: The Case Study Drop (150-200 words)
Structure:
Subject: [Result] for [similar company/role]
[First name],
[1 sentence observation about their specific challenge]
[2-3 sentence mini case study: "We worked with [similar company type]
who had [same pain point]. They were spending [X hours/dollars] on
[manual process]. After [your approach], they [specific result with
numbers].]
[1 sentence: what made their situation similar to the prospect's]
[Offer: share the full breakdown, a relevant resource, or a specific
recommendation -- NOT just "let's chat"]
[Signature]
Rules:
- Case study must be from the same industry or analogous situation
- Include at least one specific number (hours saved, % improvement, dollars)
- If you don't have a real case study, use an industry benchmark instead
- CTA offers something tangible
Step 3: Subject Line Variations
Generate 5 subject lines for each variant (15 total), following these rules:
- Under 6 words
- No ALL CAPS
- No exclamation marks
- No "Quick question" or "Touching base"
- At least 2 should reference the prospect's company or situation specifically
- At least 1 should be a question
- At least 1 should reference a number or result
Step 4: Follow-Up Sequence
Follow-Up 1 (Day 3): The Bump + New Value
Subject: Re: [original subject]
[First name],
[1 sentence: reference original email without "just following up"]
[New value: share a relevant article, data point, or insight they
would genuinely find useful -- even if they never buy from you]
[Restate soft CTA differently than the first email]
Follow-Up 2 (Day 7): The Pattern Interrupt
Subject: [Something unexpected -- industry hot take, contrarian opinion,
or humor relevant to their world]
[First name],
[2-3 sentences: share a genuine perspective on their industry that
shows you think about this space deeply. This should NOT be a pitch.
It should be something they'd forward to a colleague.]
[1 sentence: tie it back to how this relates to their specific situation]
[CTA: even softer -- "curious if you see it the same way"]
Follow-Up 3 (Day 14): The Clean Break
Subject: Re: [original subject]
[First name],
[2-3 sentences: acknowledge they're busy, provide one final piece of
value (a resource, benchmark, or tool recommendation), and give them
a clean exit]
[Something like: "If the timing isn't right, no worries at all. But
if [pain point] becomes a priority, here's where to find me: [link]"]
Rules for all follow-ups:
- NEVER say "just following up" or "circling back"
- Each follow-up must add NEW value, not just remind them you exist
- Tone should get progressively more casual, not more desperate
- The breakup email should leave them thinking "that person was genuinely helpful"
Quality Checklist
Before sending any email, verify:
- [ ] Opens with something about THEM, not about you
- [ ] No jargon or buzzwords ("synergy", "leverage", "circle back")
- [ ] A stranger could read this and learn something useful
- [ ] CTA requires less than 60 seconds of their time to respond
- [ ] You'd actually want to receive this email yourself
- [ ] Subject line would make you curious enough to open
- [ ] No more than 1 link in the entire email
- [ ] Reads well on mobile (short paragraphs, no walls of text)
- [ ] Specific to THIS prospect -- not a template with [brackets] filled in
- [ ] Follow-ups each add genuinely new value
Anti-Patterns (Never Do These)
| Bad | Why | Do Instead | |-----|-----|-----------| | "I hope this email finds you well" | Generic, wastes their time | Jump straight to the observation | | "We're the leading provider of..." | Nobody cares about your ranking | Show what you did for someone like them | | "Would love to pick your brain" | You're asking, not giving | Offer a specific insight first | | "Let me know if you'd like to hop on a quick call" | Too much commitment for a cold email | Ask a question they can answer in 1 sentence | | Sending the same template to 500 people | Low conversion, damages reputation | Batch by persona, personalize the observation | | Following up 5+ times | Desperation kills deals | 3 follow-ups max, then move on |
Powered by KOINO Capital -- AI-powered business systems that close deals while you sleep.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: koinod
- Source: koinod/koino-skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.