io.github.emailens/mcp

pkg:npm:@emailens/mcp

Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients.

transport:: remote + stdio
credential class:: open
repo:: https://github.com/emailens/mcp

Owner verification

Not yet verified. Verifying proves you control this server and is free, permanently — it never changes a published score.

Start verification →

Tools

analyze_email
Quick CSS compatibility analysis , returns warnings and per-client scores.
shallow
audit_email
Comprehensive quality audit , CSS compatibility, spam, links, accessibility, images, inbox preview, size, templates, content overflow, visual bugs.
shallow
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/Team API key.
shallow
check_deliverability
Check email deliverability for a domain , SPF, DKIM, DMARC, MX, BIMI.
shallow
diff_emails
Compare two email HTML versions , shows score changes, fixed issues, and regressions per client.
shallow
fix_email
Generate a structured fix prompt for email compatibility issues.
shallow
get_build_status
Check a build_email run by runId , returns status, iteration, best compatibility score, and the current best source once available.
shallow
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.
shallow
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.
shallow

Embed this server’s score

Tool count and median score across every tool in this server’s corpus — honest in a way a single cherry-picked tool’s badge wouldn’t be.

[![Vouch score](https://vouch.tools/api/servers/2224564c-fc78-4cdd-b81a-414da07596f9/badge.svg)](https://vouch.tools/servers/2224564c-fc78-4cdd-b81a-414da07596f9)