Emailens MCP

Last 30 days

Uptime

40.0%

Response time

297 ms typical, 297 ms slowest 5%

Last check

6 h ago

Next check

any minute now

How to call it

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "emailens-mcp": {
      "type": "http",
      "url": "https://emailens.dev/api/mcp"
    }
  }
}

13 tools

• preview_email

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

• analyze_email

  Quick CSS compatibility analysis , returns warnings and per-client scores.

• audit_email

  Comprehensive quality audit , CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates, content overflow, visual bugs.

• fix_email

  Generate a structured fix prompt for email compatibility issues.

• list_clients

  List all 21 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.

• diff_emails

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

• check_deliverability

  Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI.

• build_email

  Generate a cross-client-compatible email from a brief using Emailens's self-healing loop (generate → score across 21 clients → repair). Output stays in the framework you choose. Returns a runId immediately , poll get_build_status for progress and the final code. Requires a Pro/Te

• get_build_status

  Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available.

• sandbox_get_inbox

  Retrieve or auto-create your Emailens sandbox test email address for capturing test emails.

• sandbox_list_messages

  List recently captured test emails in the Emailens sandbox.

• sandbox_wait_for_email

  Poll and wait for a matching incoming test email in the sandbox (ideal for auth OTPs, magic links, transactional email assertions).

• sandbox_get_message

  Get complete email details: HTML/text body, parsed headers, spam score, SPF/DKIM/DMARC auth status, and validated links.

Security scan

• No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

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