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

diff_emails is exposed by the MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the diff_emails tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.

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.