capture_screenshots
Capture real email screenshots across 21 clients in real browsers. Screenshots are hosted on CDN.
How to use it
capture_screenshots is exposed by the MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the capture_screenshots 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/mcpOther tools in MCP (8)
Quick CSS compatibility analysis; returns per-client scores and one finding per problem. Faster than auditemail when you only need CSS compatibility.
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.
Check email deliverability for a domain: SPF, DKIM, DMARC, MX, BIMI records with a score and actionable issues.
Compare two email HTML versions; shows score changes, fixed issues, and introduced issues per client.
Generate a structured fix prompt for compatibility issues. Returns markdown with fix instructions that the AI can apply directly.
List all 21 supported email clients with IDs, names, engines, and dark mode support.
Full email compatibility preview: transforms HTML for 21 clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size.
Create a shareable link. Recipients see the full analysis without an account.