How do I connect MCP Server to Claude?

Run `claude mcp add emailens-mcp -- npx -y @emailens/mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.

The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.

What can MCP Server do?

MCP Server documents 9 tools to the agent, including analyze_email, audit_email, capture_screenshots. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.

MCP

Unclaimed

by emailens

MCP server for email compatibility analysis - preview, audit, fix, diff, and check deliverability across 15 email clients.

Set up this server

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01 / Choose your client

02 / Before you connect

Authentication is not specified. Check the project instructions before connecting.

Install the runtime required by the project and make it available to your client.

Project instructionsEnvironment variable names (optional)

Use names from the project instructions, separated by commas. Enter names only, never secret values.

03 / Add the configuration

Source: generated from public install instructions

claude mcp add --transport stdio 'emailens-mcp' -- 'npx' '-y' '@emailens/mcp'

Run in your terminal after replacing any placeholders.

04 / Check it in your client

Open your client’s MCP settings and confirm the server connects and lists its tools. A copied configuration does not confirm a working connection.

aiclaudecompatibilitydeveloper-toolsemailemail-testingmcpmodel-context-protocol

Is this your MCP server?

This listing was auto-indexed from the public record. Claim it to edit the page, set compatibility and unlock growth tools. Takes under two minutes.

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Security profile

Claimed and verified servers get a weekly static scan that shows what the code can reach: external services, environment variables, shell commands, agent configuration folders, plus any dependencies with known advisories. Claim this listing to get one. How the security profile works

9 of 9 tools

Documented tools (9)

From project documentation. A server handshake does not verify each tool’s description or behavior.

analyze_email

Quick CSS compatibility analysis; returns per-client scores and one finding per problem. Faster than auditemail when you only need CSS compatibility.

audit_email

Comprehensive quality audit: CSS compatibility, spam scoring, link validation, accessibility, images, inbox preview, size (Gmail clipping), template variables, content overflow, visual bugs, dark-mode and mobile text contrast, and design consistency.

capture_screenshots

Capture real email screenshots across 21 clients in real browsers. Screenshots are hosted on CDN.

check_deliverability

Check email deliverability for a domain: SPF, DKIM, DMARC, MX, BIMI records with a score and actionable issues.

diff_emails

Compare two email HTML versions; shows score changes, fixed issues, and introduced issues per client.

fix_email

Generate a structured fix prompt for compatibility issues. Returns markdown with fix instructions that the AI can apply directly.

list_clients

List all 21 supported email clients with IDs, names, engines, and dark mode support.

preview_email

Full email compatibility preview: transforms HTML for 21 clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size.

share_preview

Create a shareable link. Recipients see the full analysis without an account.

Tool change history

Compared across complete checks of the same configuration. Tools were listed, not invoked. Input-schema changes are not measured here.

No complete tool checks yet.

FAQ

Questions about MCP Server

How do I connect MCP Server to Claude?: Run `claude mcp add emailens-mcp -- npx -y @emailens/mcp` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.
Is MCP Server free?: The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.
What can MCP Server do?: MCP Server documents 9 tools to the agent, including analyze_email, audit_email, capture_screenshots. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.