cold-email

cold-email is a skill for Claude Code from bromso/metapowers. It costs 65 tokens per session (724 once invoked), scanned A, original, MIT.

A cold-email campaign planning skill for contacting potential customers who have not heard of your business.

In plain words
What is it for?
Use it to define target prospects, write subject lines and email messages, and create a three-to-five-email outreach sequence.
Why use it?
It provides a structured way to choose recipients and plan several follow-up emails, rather than sending unrelated messages. It also addresses personalization and compliance considerations.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the marketing plugin — 29 skills shipped together

Good fit Use it to define target prospects, write subject lines and email messages, and create a three-to-five-email outreach sequence.

Compare 6 skills from other repositories ↓
Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code
/plugin marketplace add bromso/metapowers
Claude Code
/plugin install marketing

Made for: Claude Code.

Or install marketing, the plugin that ships this one along with the rest of its 29 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cold-email

README.md
[![agentmods](https://agentmods.dev/badge/skills/bromso/metapowers/cold-email/github.svg)](https://agentmods.dev/skills/bromso/metapowers/cold-email)
Your own site
<a href="https://agentmods.dev/skills/bromso/metapowers/cold-email"><img src="https://agentmods.dev/badge/skills/bromso/metapowers/cold-email/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cold-email

Your own site · 80×15
<a href="https://agentmods.dev/skills/bromso/metapowers/cold-email"><img src="https://agentmods.dev/badge/skills/bromso/metapowers/cold-email.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 724 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00065 $0.00724
Opus 5.5 $0.00026 $0.00290
Sonnet 5.5 $0.00013 $0.00145
Haiku 4.5 $0.00006 $0.00072

Measured 3d ago against content hash 7d9c2dc3c75e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cold-email scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/marketing/skills/cold-email/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cold Email

Design cold outbound email campaigns for "$ARGUMENTS". Create personalized email templates, follow-up sequences, and targeting criteria.

Arguments. $ARGUMENTS may contain the project name and optional flags. Take the first token as <project> and treat --skip-checks as a flag; never include flags in file paths. All paths below use <project>. If --skip-checks is present, skip the prerequisite check and, before writing any artifact, append one line to .metapowers/marketing/<project>/skip-log.md: - <ISO timestamp> — <skill name> skipped prerequisite check for <artifact file> — reason: <reason or "none given">.

Prerequisites

Read .metapowers/marketing/<project>/00-strategy.md. If this file does not exist, tell the user:

Phase 0 (Strategy) has not been completed for "". Run /marketing:customer-research <project> first, or use --skip-checks to bypass.

Process

  1. Read context:

    • Read .metapowers/marketing/<project>/00-strategy.md for audience and value proposition
    • Read ${CLAUDE_PLUGIN_ROOT}/shared/campaign-plan-template.md for structure
  2. Define targeting criteria:

    • Ideal customer profile (ICP) for outbound
    • Company firmographics: size, industry, tech stack, growth signals
    • Contact persona: title, department, seniority
    • Intent signals: hiring, funding, tech changes, content engagement
  3. Design email sequence:

    • 3-5 email sequence with timing (typically days 1, 3, 7, 14)
    • Each email: different angle or value prop
    • Personalization strategy: what's personalized per recipient?
    • Follow-up logic: when to stop, when to escalate
  4. Write email templates:

    • For each email: subject line (2-3 variants), body, CTA
    • Keep emails short (under 150 words)
    • Lead with relevance, not pitch
    • Include specific personalization placeholders
    • Compliance: include opt-out, identify sender, no deceptive subjects
  5. Write the artifact — append to .metapowers/marketing/<project>/03-convert.md under a ## Cold Email section. Create the file with a # Convert — <project> heading if it does not exist; if a ## Cold Email section already exists, replace only that section. The section contains:

    • ICP & Targeting — who to target and why
    • Sequence Design — timing and logic
    • Email Templates — full copy for each email
    • Personalization Guide — what to customize per recipient
    • Compliance Notes — CAN-SPAM, GDPR requirements

Read the full file on GitHub · 54 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 54 lines · 65 tokens per session scan A 7d9c2dc3c75e

Subscribe to this mod's changes

cold-email is a skill published in the GitHub repository bromso/metapowers (2 stars, last pushed 3d ago), licensed MIT. It adds 65 tokens to every session and 724 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-21.