Newsletter Growth MCP server

by closermethod·io.github.closermethod/newsletter-growth-mcp·v1.0.1

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Newsletter growth loops, welcome-sequence architecture, subject-line and list-metric guidance.

A85/100grade A

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Safety scan

A85/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Newsletter Growth tools (6)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

audit_subject_line
Audit an email subject line: mobile truncation length, all-caps, spam phrases, fake Re:/Fwd:, specificity. Returns PASS/NEEDS WORK.
get_full_pack
The complete newsletter library in one payload: growth loops, welcome sequence, metric reads.
get_growth_loop
Get a newsletter growth loop with mechanism, when it wins, execution rules, and failure mode. Loops: lead_magnet, social_repurpose, cross_promo, referral, sponsorship_swap. Omit for all loops + selection logic.
get_monetization_readiness
Given subscriber count (and optionally open/click rates as percents), returns readiness verdicts for the three monetization paths: own product, per-click sponsorships, flat-rate placements, with sequencing. Engagement monetizes; size impresses.
get_welcome_sequence
The 6-email welcome sequence architecture: per-email job, timing, and subject shape (deliver → receipt → quick win → segment → soft offer → close), plus the one-job-per-email rules.
interpret_list_metric
Interpret a list metric against practitioner ranges: open_rate, click_rate, growth_rate, unsubscribe_rate, reply_rate. Returns healthy range, warning threshold, and the diagnostic.

Public scan report

scanner v0.1.9 · 2026-09-25 · same rubric, same numbers if you re-run it

no findings

Code scan3 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 73 days ago12/15
Maintainer identityregistry namespace matches repository owner6/10

Overall 85/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How Newsletter Growth compares

Against every graded Email MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 85/100; higher than 78% of 916 Email servers
Tools: 6; the typical Email server has 7
Tools that change things: 0%; typical: 25%. Fewer write tools means less an agent can break

What its tools let an agent do: 6 read

Install Newsletter Growth in Claude Code, Cursor or VS Code

Runs npx -y newsletter-growth-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add newsletter-growth-mcp -- npx -y newsletter-growth-mcp

Add to Cursor

What the publisher says

From the Newsletter Growth repository's README, as published. We do not edit it. Read it on GitHub

Newsletter 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

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

Nothing above is checked by us. What we check is on the safety report.

Newsletter Growth: common questions

Is Newsletter Growth MCP server safe?: Yes, by our scan: it is graded A (85/100). Read the Newsletter Growth safety report
How do I install Newsletter Growth?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Newsletter Growth need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Newsletter Growth maintained?: The last commit was 113 days ago (2026-07-14). The latest release is v1.0.1.
What can I use instead of Newsletter Growth?: Servers from other publishers that do the same job: Shipmail MCP server, Entra News MCP server and Impri MCP server.
How does Newsletter Growth compare with other Email MCP servers?: safety score 85/100 (higher than 78% of 916 Email servers); tools 6 (the typical Email server has 7); tools that change things 0% (typical: 25%. Fewer write tools means less an agent can break). Full comparison.

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