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Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.
About
Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.
Remote endpoints: streamable-http: https://docs.osamahassouna.com/api/mcp
Security Report
Valid MCP server (3 strong, 1 medium validity signals). 1 code issue detected. No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 2 finding(s) downgraded by scanner intelligence.
4 tools verified · Open access · 2 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
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How to Install & Connect
Available as Local & Remote
This plugin can run on your machine or connect to a hosted endpoint. during install.
Documentation
View on GitHubFrom the project's GitHub README.
Osama Hassouna · Docs
Source for docs.osamahassouna.com — an engineering reference hub I keep open while building. Currently one guide is live, with more landing as I write them.
Live now
HTML Email Playbook
A working reference for hand-building HTML email templates that render reliably across Outlook (Windows desktop, 2007 through 365), Gmail web + mobile, Apple Mail, Yahoo Mail, and the long tail of clients that haven't moved past 2007.
Covers:
- Structure — doctype, head boilerplate, body container, header / body / footer organization
- Components — bulletproof CTA buttons (with Outlook VML fallback), spacing patterns, images, inline icons, background images, text
- Compatibility — Outlook MSO conditional comments, RTL languages, hybrid responsive layouts
- Production — Gmail 102KB clipping, dark mode, preheader text
- AI Generation — rules and patterns for AI tools that generate playbook-compliant email HTML
Read it: docs.osamahassouna.com/email-playbook/
There's also a Playground at /email-playbook/playground/ with a live editor, instant preview, and a "From Image" tab that converts a design screenshot into playbook-compliant HTML.
Use the playbook in your AI workflow
The playbook is published as an MCP server + terminal CLI so AI clients (Claude Desktop, Cursor, Cline, etc.) can pull rules and component patterns directly into their reasoning. The model calls structured tools to fetch the exact patterns from the playbook instead of guessing from training data.
npm install -g email-playbook-mcp
Setup, tool reference, and Claude Desktop / Cursor config snippets:
docs.osamahassouna.com/email-playbook/mcp/
There's also a hosted JSON-RPC endpoint at docs.osamahassouna.com/api/mcp if you'd rather not install anything.
License
MIT. Playbook content © Osama Hassouna · osamahassouna.com
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