The Emailens MCP MCP server,
connected in one click.
Analyze, audit, fix and diff HTML, MJML, Maizzle and React Email across 21 email clients. Connect the official Emailens MCP MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Emailens MCP to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http emailens-mcp https://emailens.dev/api/mcpRun in your terminal, then restart Claude Code.
Emailens MCP · https://emailens.dev/api/mcp
What your AI can do with Emailens MCP
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “preview_email”: Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox p.”
“Use “analyze_email”: Fix error and warning findings. Info findings are not problems (the email falls back safely there): never remove responsive (@media) or dark.”
“Use “audit_email”: Fix error and warning findings, and restore anything listed in designRemovals. Info findings are not problems (the email falls back safely t.”
“Use “fix_email”: Generate a structured fix prompt for email compatibility issues.”
How secure is the Emailens MCP MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Emailens MCP holds up.
Official endpoint
Operated by Emailens MCP (emailens.dev) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Emailens MCP adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Emailens MCP
Choose Emailens MCP in the gate directory. No sign-in needed.
Use it anywhere
Emailens MCP's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Emailens MCP exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
preview_email — Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox p
analyze_email — Fix error and warning findings. Info findings are not problems (the email falls back safely there): never remove responsive (@media) or dark
audit_email — Fix error and warning findings, and restore anything listed in designRemovals. Info findings are not problems (the email falls back safely t
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 f
diff_emails — Compare two email HTML versions , shows score changes, fixed issues, and regressions per client.
capture_screenshots — Capture real email screenshots across 21 clients (Gmail, Outlook, Apple Mail, etc.) with light and dark mode variants. Screenshots are rende
share_preview — Create a shareable link for an email preview. Recipients see the full analysis without needing an account. Requires the Dev plan or above.
+ 7 more tools once connected
Who runs the Emailens MCP MCP server?
The Emailens MCP MCP server at a glance
https://emailens.dev/api/mcpQuestions, answered
Is there an official Emailens MCP MCP server?
Yes — Emailens MCP operates its own remote MCP server at emailens.dev. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Emailens MCP to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Emailens MCP in the directory. No account or sign-in is needed. From then on, Emailens MCP's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Emailens MCP runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Emailens MCP MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Emailens MCP in minutes. No credit card required.
Connect more than just Emailens MCP
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Emailens MCP in: Claude · Claude Code · ChatGPT · Cursor · VS Code