# Emailens MCP MCP server

Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.

## Links
- Registry page: https://www.getdrio.com/mcp/io-github-emailens-mcp
- Repository: https://github.com/emailens/mcp
- Website: https://emailens.dev/mcp

## Install
- Command: `npx -y @emailens/mcp`
- Endpoint: https://emailens.dev/api/mcp
- Auth: Not captured

## Setup notes
- Package: Npm @emailens/mcp v0.4.1
- Environment variable: EMAILENS_API_KEY (secret)
- Remote endpoint: https://emailens.dev/api/mcp

## Tools
- preview_email (Preview Email) - Full email compatibility preview — transforms HTML for 15 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size. Endpoint: https://emailens.dev/api/mcp
- analyze_email (Analyze Email) - Quick CSS compatibility analysis — returns warnings and per-client scores. Endpoint: https://emailens.dev/api/mcp
- audit_email (Audit Email) - Comprehensive quality audit — CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates. Endpoint: https://emailens.dev/api/mcp
- fix_email (Fix Email) - Generate a structured fix prompt for email compatibility issues. Endpoint: https://emailens.dev/api/mcp
- list_clients (List Email Clients) - List all 15 supported email clients with IDs, names, rendering engines, dark mode support, and deprecation status. Use the returned IDs to filter other tools like preview_email or capture_screenshots. Endpoint: https://emailens.dev/api/mcp
- diff_emails (Diff Emails) - Compare two email HTML versions — shows score changes, fixed issues, and regressions per client. Endpoint: https://emailens.dev/api/mcp
- check_deliverability (Check Deliverability) - Check email deliverability for a domain — SPF, DKIM, DMARC, MX, BIMI. Endpoint: https://emailens.dev/api/mcp

## Resources
Not captured

## Prompts
- analyze-email - Analyze Email Analyze an email for compatibility issues across 15 email clients. Arguments: html
- fix-email - Fix Email Analyze an email and fix all compatibility issues. Arguments: html
- check-domain - Check Domain Deliverability Check email deliverability for a domain — SPF, DKIM, DMARC, MX, BIMI. Arguments: domain

## Metadata
- Owner: io.github.emailens
- Version: 0.4.1
- Runtime: Npm
- Transports: STDIO, HTTP
- License: Not captured
- Language: Not captured
- Stars: Not captured
- Updated: Apr 1, 2026
- Source: https://registry.modelcontextprotocol.io