Getting Started

Quick Start

Get your first email preview or AI-generated template in under a minute using the Emailens web app, MCP, or REST API.

Emailens provides 4 distinct ways to test, build, and optimize email templates:

1. Web App (Zero Setup)

Open emailens.dev/dashboard/new.
Paste any HTML, React Email (JSX), or MJML template into the editor.
Click Preview to view side-by-side renders and 14-point audit results across 21 email clients.

2. AI Email Builder

Open emailens.dev/build.
Describe your email layout and select your framework (HTML, React Email, MJML).
The engine iteratively generates, audits, and auto-repairs rendering bugs.

3. Model Context Protocol (MCP)

Connect Claude Code, Cursor, or Claude Desktop directly to Emailens:

claude mcp add emailens -- npx -y @emailens/mcp

Ask your AI: "Analyze this email template and fix any issues that break in Outlook or Gmail."

4. REST API

Submit emails programmatically from your build pipeline:

curl -X POST https://emailens.dev/api/preview \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer ek_live_..." \
  -d '{"html": "<html><body><h1>Hello</h1></body></html>"}'

Next Steps

Preview Tool & Linter: Deep dive into the 14-point audit engine
AI Builder Guide: Generating bulletproof templates with AI
MCP Server Setup: Connecting AI coding assistants
REST API Reference: Full endpoint reference

Introduction

Emailens is an email QA tool that previews how HTML emails render across 21 email clients including Gmail, Outlook, Apple Mail, Yahoo, HEY Mail, Superhuman, and more.

Installation

Set up Emailens for your project , API keys, engine package, MCP server, or GitHub Action.

On this page

1. Web App (Zero Setup)2. AI Email Builder 3. Model Context Protocol (MCP)4. REST API Next Steps