Developer Tools

emailens.dev

Provides email preview, analysis, and compatibility checking across multiple email clients.

1 endpoint9 known toolsFirst detected May 29, 2026Last detected September 6, 2026

ENDPOINT 1

https://emailens.dev/api/mcp

No auth detected

MCP server metadata

Name: emailens
Version: 0.4.0

Capabilities

tools.listChangedprompts.listChanged

Known tools 9

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.

Potential side effects

analyze_email

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

Inferred read-only

audit_email

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

Inferred read-only

fix_email

Generate a structured fix prompt for email compatibility issues.

Potential side effects

list_clients

List all 21 supported email clients with IDs, names, rendering engines, dark mode support, and deprecation status.

Potential side effects

diff_emails

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

Potential side effects

check_deliverability

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

Potential side effects

build_email

Generate a cross-client-compatible email from a brief using Emailens's self-healing loop (generate → score across 21 clients → repair).

Potential side effects

get_build_status

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

Inferred read-only

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.emailens]
url = "https://emailens.dev/api/mcp"
enabled = true

Claude Code

.mcp.json

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

Claude Desktop

Settings → Connectors → Add custom connector

Name: emailens
Remote MCP URL: https://emailens.dev/api/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "emailens": {
      "url": "https://emailens.dev/api/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

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

Generic MCP

Client-specific MCP configuration

{
  "name": "emailens",
  "transport": "streamable-http",
  "url": "https://emailens.dev/api/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

TRUST AND VERIFICATION EVIDENCE

Trust Data Available

BuiltWith Trust API v2 evidence for emailens.dev was fetched 2026-07-26T16:10:56.476Z and is being refreshed.

Trust status Trusted

emailens.dev is assessed as Trusted: Domain runs a meaningful technology spend, consistent with a real business.

Indexed

Evidence is source-attributed and does not guarantee that a third-party server is safe. Risk labels are conservative metadata heuristics.