Cold Email
B2B cold outbound email copy + deliverability rules, plain-text only, under 100 words, one CTA.
Test report
- Verdict
- Works with setup
- Score
- Tested
- Jul 14, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Aug 10, 2026 · 79a6bbc
Asked for the same cold email with and without the skill: the baseline came back at 120+ words, opened with 'I hope this finds you well,' and asked for 30 minutes; the skill version cut to under 50 words, one soft 15-minute ask, and a trigger-based opener -- almost identical to the skill's own before/after worked example.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 9/10
- Docs & honesty 4/5
What Cold Email does
Writes cold prospecting emails and follow-up sequences using a strict plain-text, single-CTA, under-100-word structure, plus deliverability guidance (domain warming, SPF/DKIM/DMARC, spam-trigger words) and a reply-handling playbook by objection type. It triggers on requests to write/fix cold or outbound emails, not on newsletters or LinkedIn messaging (explicitly deferred to linkedin-outreach). Best results require an optional `.agents/sales-context.md` file (ICP, value prop, proof points) generated by the sibling sales-context skill; without it, the skill just asks the same questions live.
Cold Email before / after — same task, with and without
Without the skill
Hi {{FirstName}}, hope this email finds you well! I came across your profile and was really impressed by your journey. I'd love to hop on a quick call to explore synergies...
With Cold Email
Hi Dana — Northwind's careers page added three RevOps roles last month; that's usually when CRM hygiene starts hurting. We cut manual entry 34% for Loop. Worth 15 minutes Thursday?
How to install Cold Email
git clone https://github.com/TheCraigHewitt/sales-skills
cd sales-skills
mkdir -p ~/.claude/skills
cp -r skills/cold-email ~/.claude/skills/cold-email
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Cold Email
-
/cold-emailB2B cold outbound email copy + deliverability rules, plain-text only, under 100 words, one CTA.
It also activates on plain-language prompts like these:
-
Write a cold email with a single CTA for this prospect -
Draft a research-backed first-touch email, no templates -
Personalize this outreach email based on their recent news
Appears in
Frequently asked questions
- Is the Cold Email skill free?
- Yes. The skill itself is free from TheCraigHewitt/sales-skills. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Cold Email work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Works with setup. Asked for the same cold email with and without the skill: the baseline came back at 120+ words, opened with 'I hope this finds you well,' and asked for 30 minutes; the skill version cut to under 50 words, one soft 15-minute ask, and a trigger-based opener -- almost identical to the skill's own before/after worked example.
- What is the Cold Email SkillProof Score?
- 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 9/10, docs & honesty 4/5.
- How do I install Cold Email?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Cold Email with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.