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HTML Email Playbook

Official registry Productivity

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http html-email-playbook 'https://docs.osamahassouna.com/api/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "html-email-playbook": {
            "type": "http",
            "url": "https://docs.osamahassouna.com/api/mcp"
        }
    }
}
NPM package email-playbook-mcp
Claude Code 
claude mcp add html-email-playbook -- npx -y email-playbook-mcp@0.7.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "html-email-playbook": {
            "command": "npx",
            "args": [
                "-y",
                "email-playbook-mcp@0.7.0"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Osama Hassouna · Docs
  2. Live now
  3. Use the playbook in your AI workflow
  4. License

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

Frequently asked questions

What is HTML Email Playbook?

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

How do I install HTML Email Playbook?

It runs as a remote server. In Claude Code: claude mcp add --transport http html-email-playbook 'https://docs.osamahassouna.com/api/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does HTML Email Playbook need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is HTML Email Playbook open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains HTML Email Playbook?

It is published by OsamaHassouna. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.