About newsletter-growth-mcp
newsletter-growth-mcp gives newsletter publishers and creators practical frameworks for audience growth, onboarding, and monetization readiness. Its tools cover list engagement metrics as well as growth and email content checks.
Key features
- 01Outlines five newsletter growth loops
- 02Provides a six-email welcome sequence
- 03Audits subject lines for common issues
- 04Explains list-metric ranges and diagnostics
- 05Assesses monetization readiness
- 06Returns the complete guide in one payload
Use cases
- 01Choose a growth loop for a newsletter
- 02Build or review a welcome sequence
- 03Check subject lines before sending
- 04Evaluate readiness for sponsorships or products
MCP support
The MCP server exposes six tools for newsletter growth, email review, list metrics, and monetization readiness. MCP clients can retrieve individual guidance or the full pack.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
Tools
6Saved tool list · updated 3w ago
| Parameter | Type | Required | Description |
|---|---|---|---|
| loop | enum | No | lead_magnet | social_repurpose | cross_promo | referral | sponsorship_swap |
Details
From the project READMENewsletter Growth MCP
Growth loops, welcome sequences, and monetization readiness for the only audience you actually own.
Disclaimer. Practitioner frameworks; thresholds are ranges, not guarantees. The author runs paid per-click sponsorships on her own list — these are the numbers sponsors actually pay on.
Why This Exists
Platform followers are rented; the list is owned. But most creators (and their AI agents) treat the newsletter as a broadcast afterthought: no welcome sequence, no growth loop, monetization guesses based on list size instead of engagement.
The house rule: engagement monetizes; size impresses. A 520-person list at 43% opens out-earns a 10k list at 12%.
6 Tools
| Tool | What it returns |
|---|---|
get_growth_loop | 5 growth loops (lead magnet, social repurpose, cross-promo, referral, sponsorship swap) with when each wins and its failure mode |
get_welcome_sequence | The 6-email architecture: deliver → receipt → quick win → segment → soft offer → close |
audit_subject_line | PASS/NEEDS WORK: truncation length, spam phrases, fake Re:, specificity |
interpret_list_metric | Healthy/warning ranges + diagnostics for opens, clicks, growth, unsubs, replies |
get_monetization_readiness | Given your list size + engagement: readiness verdicts for own product, per-click sponsorships, flat placements |
get_full_pack | Everything in one payload |
Install
npx newsletter-growth-mcp # once published to npm
# or from source:
git clone https://github.com/closermethod/newsletter-growth-mcp && cd newsletter-growth-mcp && npm i && npm run build && node dist/main.js
Claude Desktop config:
{ "mcpServers": { "newsletter-growth": { "command": "npx", "args": ["newsletter-growth-mcp"] } } }
The Family
Own the audience (this one) ← get seen (content-hooks-mcp) ← get the reply (outbound-engine-mcp). Sponsorship deal terms live in creator-deals-mcp; inbox placement in outreach-deliverability-mcp. Full catalog: MCP Hub
Built By
Elisabeth Hitz — 10+ years enterprise sales; monetizes her own list with per-click sponsorships.
License: MIT
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.