diff_emails

MCP tool from MCP by emailens

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

How to use it

Project documentation lists diff_emails for the MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install MCP

$npx -y @emailens/mcp

FULL MCP LISTING

Other tools in MCP (8)

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.

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.