Emailens MCP
by emailenscommunityv0.4.1
5
This MCP server analyzes, previews, diffs, and fixes HTML emails across 15 email clients, capturing real screenshots and creating shareable links with an optional API key.
From the registry: Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.
Install & configure
Prerequisites
- optionalEmailens API key (optional)Optional — unlocks screenshots and shareable links. Free API key at emailens.dev/settings/api-keys. Without the key, local tools (preview, analyze, audit, fix, diff, deliverability) still work.https://emailens.dev/settings/api-keys
Install in your client
Paste into the AI you're chatting with — it will figure out the rest
Please install the `mcp-emailens` MCP server into my current AI client (that's you).
Optional prerequisites:
- Emailens API key (optional) — Optional — unlocks screenshots and shareable links. Free API key at emailens.dev/settings/api-keys. Without the key, local tools (preview, analyze, audit, fix, diff, deliverability) still work. (https://emailens.dev/settings/api-keys)
Canonical MCP server config (stdio transport):
- command: `npx`
- args: ["-y","@emailens/mcp"]
- optional environment variables:
- `EMAILENS_API_KEY`: Emailens API key — unlocks hosted tools (capture_screenshots, share_preview) (example: `<your-api-key>`)
Note: Also available as remote HTTP endpoint at https://emailens.dev/api/mcp with Bearer auth. Default install uses npx; local-only tools work with no key.
Add this MCP server to my current client's config in the correct format for you. If you need secrets or credentials I haven't provided, ASK me — do not invent values or leave raw placeholders. After adding it, tell me how to verify the server is connected.Note: Also available as remote HTTP endpoint at https://emailens.dev/api/mcp with Bearer auth. Default install uses npx; local-only tools work with no key.
Tools (9)
preview_email
Full email compatibility preview that transforms HTML for 15 clients and analyzes CSS.
analyze_email
Quick CSS compatibility analysis that returns per-client scores and warnings.
audit_email
Comprehensive quality audit covering various aspects of email compatibility.
fix_email
Generates a structured fix prompt for compatibility issues.
list_clients
Lists all 15 supported email clients with their details.
diff_emails
Compares two email HTML versions and shows score changes and issues.
check_deliverability
Checks email deliverability for a domain with actionable issues.
capture_screenshots
Captures real email screenshots across 15 clients in real browsers.
share_preview
Creates a shareable link for email analysis.
Environment variables
EMAILENS_API_KEYrequiredAPI key required for capturing screenshots and sharing previews.Packages
@emailens/mcp
npmv0.4.1transport: stdio
Remote Endpoints
https://emailens.dev/api/mcp
type: streamable-http
Details
- Language
- TypeScript
- License
- MIT
- Released
- Apr 1, 2026
- Last commit
- Apr 1, 2026
- Registry name
- io.github.emailens/mcp