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Cold Email Outreach · borghei | DecimalAI

marketingby borghei

Cold Email Outreach

borghei/cold-email

Source borghei/claude-skills ↗License NOASSERTION

Write and optimize B2B cold email outreach sequences that get replies, covering personalization, follow-up cadence, deliverability, and compliance.

SkillScore77Maintained

Automatic

Sales & GTM pack

Last verified 8/20/2026

What it changes

Passed 17 of 22 test cases with the skill, and 10 of 22 without it.

Without skill45%

With skill77%

Checks it passed that the model alone missed

Excludes subject lines containing emojis or question marks.
Formats each subject line to be between 2 and 4 words long.
Restricts the email body length to no more than 4 sentences.

and 6 more in the full report

7 fixed10 passed either way5 still failing0 broke

Pass-rate lift: +32 pp
Tokens: +285%
Agent turns: 0%
Response time: -8%

Model gemini-3.6-flashMeasured 8/20/2026v117 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/borghei-cold-email/SKILL.md https://app.decimal.ai/s/borghei-cold-email/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add borghei-cold-email, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/borghei-cold-email/ and pins it in .decimal/skills.lock

decimalai skills add borghei-cold-email

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/borghei-cold-email/SKILL.md https://app.decimal.ai/s/borghei-cold-email/SKILL.md

Raw file: /s/borghei-cold-email/SKILL.md ↗ · machine-readable summary at /s/borghei-cold-email.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 7 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 7

Prompt

Draft a cold email outreach message targeting a Fortune 500 Chief Executive Officer regarding enterprise AI infrastructure deployment. The user says 'just draft it'.

What was checked, without and with the skill
Checked	Without skill	With skill
Includes an explicit list of assumptions at the top of the generated text.	Missed	Passed
Restricts the email body length to no more than 4 sentences.	Missed	Passed

case-03 · gemini-3.6-flash · 8/20/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md540 lines4 filesincludes scripts

Cold Email Outreach

Production-grade B2B cold email that sounds like it came from a person, not a sequence tool.

Keywords
Quick Start
Core Workflows
Writing Principles
Voice Calibration by Audience
Subject Line Framework
Follow-Up Strategy
Personalization Framework
Deliverability Setup
Compliance Requirements
Anti-Patterns
Best Practices
Integration Points

Keywords

cold email, cold outreach, prospecting email, SDR email, sales email, first-touch email, follow-up sequence, email prospecting, outbound email, sales development, sequence building, email personalization, email deliverability, CAN-SPAM, GDPR, B2B outreach, email compliance, subject lines, reply rates, breakup email

Clarify First

Before generating the email, confirm these inputs. If any is unknown or vague, ASK — do not assume:

ICP / prospect context — job title, company type/size, seniority (drives the opener, relevance, and voice calibration)
Specific problem + outreach trigger — the pain and why now (selects the framework and shapes the opener)
The one proof point — a specific number, named customer, or result (drives the credibility line)
The single CTA / goal — book a call, get a reply, or get a referral (drives the one ask)

Stop rule: ask only the 2-3 that most change the output. If the user says "just draft it," proceed and list your assumptions at the top of the artifact.

Track record

Benchmark

17 / 22

test cases passed, vs 10 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

borghei / claude-skills

marketing/cold-email/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 3 files · scripts

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See it in action

What's inside

Cold Email Outreach

Table of Contents

Keywords

Clarify First

Track record

Benchmark

Adoption

SkillSafety

Source

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