email-marketing

email-marketing is a skill for Claude Code from arnabbagxd/Brand-building-skills. It costs 121 tokens per session (2,424 once invoked), scanned A, original, MIT.

A guide for planning and running email marketing, the use of email to communicate with customers and subscribers. It covers growing a subscriber list, sending campaigns, and designing email content.

In plain words
What is it for?
Use it to plan newsletters, promotional emails, audience groups, signup methods, delivery practices, message comparisons, and email designs.
Why use it?
It helps organise email work around the right audience, message, delivery practices, and campaign goals instead of treating every email as a one-off.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the brand-building-skills plugin — 29 skills shipped together

Good fit Use it to plan newsletters, promotional emails, audience groups, signup methods, delivery practices, message comparisons, and email designs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/arnabbagxd/brand-building-skills/email-marketing
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 arnabbagxd/Brand-building-skills --skill email-marketing
Clone the repo
git clone --depth 1 https://github.com/arnabbagxd/Brand-building-skills

Made for: Claude Code.

Or install brand-building-skills, 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 email-marketing

README.md
[![agentmods](https://agentmods.dev/badge/skills/arnabbagxd/brand-building-skills/email-marketing/github.svg)](https://agentmods.dev/skills/arnabbagxd/brand-building-skills/email-marketing)
Your own site
<a href="https://agentmods.dev/skills/arnabbagxd/brand-building-skills/email-marketing"><img src="https://agentmods.dev/badge/skills/arnabbagxd/brand-building-skills/email-marketing/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-marketing

Your own site · 80×15
<a href="https://agentmods.dev/skills/arnabbagxd/brand-building-skills/email-marketing"><img src="https://agentmods.dev/badge/skills/arnabbagxd/brand-building-skills/email-marketing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,424 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. Third-party audits
  • Socket pass 12 Jun 2026
  • Snyk pass 12 Jun 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00121 $0.02424
Opus 5 $0.00060 $0.01212
Sonnet 5 $0.00024 $0.00485
Haiku 4.5 $0.00012 $0.00242

Measured 13d ago against content hash 684bdd5003f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

email-marketing 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 13d 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.

skills/email-marketing/SKILL.md · 238 lines

How it starts

The opening of the file, as written. The whole thing — 238 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Email Marketing

You are an email marketing strategist. Your job is to build a high-performing email channel — growing the list, earning high open rates, and driving consistent revenue from a brand's most valuable owned asset.

Before You Start

Check if .agents/brand-context.md exists. Read it. Email marketing must reflect the brand's voice and serve the defined audience. The tone, frequency, and content all flow from brand positioning.


Email Is the Most Valuable Owned Channel

Email is the only channel where:

  • The brand owns the relationship (no algorithm between you and the subscriber)
  • Reach is predictable (you send to X people, X people receive it)
  • ROI is highest of any digital channel (avg $36 for every $1 spent)
  • Audience is opted in and warm (they chose to hear from you)

The goal of email marketing: build a list of engaged subscribers and convert that engagement into revenue, loyalty, and brand advocacy over time.


Information to Gather

  1. Business type — DTC, SaaS, service, content brand, B2B?
  2. Current list size and platform — Klaviyo, Mailchimp, Kit, Beehiiv, Substack?
  3. Current email types — what emails are being sent now?
  4. Open rate and click rate — current benchmarks?
  5. Primary goal — list growth, revenue, engagement, or deliverability fix?
  6. Audience — who are the subscribers? What do they care about?

Output: Email Marketing Strategy


01 — LIST BUILDING STRATEGY

A list is only as valuable as its quality. Build with intent.

Lead magnet strategy (primary list builder): Offer something specific and immediately useful in exchange for an email address.

Lead magnet type Best for Examples
Discount/offer E-commerce "10% off your first order"
Free guide/PDF B2B, content brands "The [topic] Playbook"
Quiz/assessment Any "Find your perfect [product]"
Free tool/template SaaS, B2B "Free [specific] calculator"
Waitlist Pre-launch "Get early access"
Newsletter value prop Content brands "Join 50K+ readers"

Read the full file on GitHub · 238 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. 13d ago First seen · 238 lines · 121 tokens per session scan A 684bdd5003f6

Subscribe to this mod's changes

email-marketing is a skill published in the GitHub repository arnabbagxd/Brand-building-skills (637 stars, last pushed 3mo ago), licensed MIT. It adds 121 tokens to every session and 2,424 once invoked, about $0.0006 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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