email-copywriter

email-copywriter is a skill for Claude Code from OpenAnalystInc/10x-Content-Expert. It costs 64 tokens per session (2,439 once invoked), scanned A, original, no licence file.

An email-writing guide for marketing messages such as cold emails, welcome sequences, newsletters, promotions, follow-ups, and re-engagement campaigns.

In plain words
What is it for?
Writing and revising marketing emails, including outreach, onboarding, promotional, newsletter, follow-up, and re-engagement messages.
Why use it?
It gives email work a consistent process and uses reference examples instead of requiring every message to be developed from a blank page.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the 10x-content-expert plugin — 30 skills, 4 commands, 3 agents shipped together

Good fit Writing and revising marketing emails, including outreach, onboarding, promotional, newsletter, follow-up, and re-engagement messages.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/openanalystinc/10x-content-expert/email-copywriter
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add OpenAnalystInc/10x-Content-Expert --skill email-copywriter
Clone the repo
git clone --depth 1 https://github.com/OpenAnalystInc/10x-Content-Expert

Made for: Claude Code.

Or install 10x-content-expert, the plugin that ships this one along with the rest of its 30 skills, 4 commands, 3 agents.

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 email-copywriter

README.md
[![agentmods](https://agentmods.dev/badge/skills/openanalystinc/10x-content-expert/email-copywriter/github.svg)](https://agentmods.dev/skills/openanalystinc/10x-content-expert/email-copywriter)
Your own site
<a href="https://agentmods.dev/skills/openanalystinc/10x-content-expert/email-copywriter"><img src="https://agentmods.dev/badge/skills/openanalystinc/10x-content-expert/email-copywriter/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 email-copywriter

Your own site · 80×15
<a href="https://agentmods.dev/skills/openanalystinc/10x-content-expert/email-copywriter"><img src="https://agentmods.dev/badge/skills/openanalystinc/10x-content-expert/email-copywriter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,439 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 unknown 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 $0.00064 $0.02439
Opus 5 $0.00032 $0.01220
Sonnet 5 $0.00013 $0.00488
Haiku 4.5 $0.00006 $0.00244

Measured 10d ago against content hash 1253db766b37, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

email-copywriter 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 10d 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.

.claude/skills/email-copywriter/SKILL.md · 443 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 10d ago First seen · 443 lines · 64 tokens per session scan A 1253db766b37

Subscribe to this mod's changes

email-copywriter is a skill published in the GitHub repository OpenAnalystInc/10x-Content-Expert (15 stars, last pushed 6mo ago), with no licence file. It adds 64 tokens to every session and 2,439 once invoked, about $0.0003 per session on Opus 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 2026-08-30.

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