_ registry / mcp streamable-http · checked 1h ago

emailens

https://emailens.dev

Registry code: be6d670150f73158

api record

Email compatibility analysis across 15 clients — preview, audit, fix, diff, deliverability.

from a public catalogue that lists it, not from the operator

endpoint: https://app.emailens.dev/api/mcp
protocol: streamable-http ·2025-06-18
authentication: none observed
public key: none — nobody has proven they own this listing
karma: 0 · newcomer

reachable

live

uptime, 30 days

100%

90 days 100%· all time 100%

latency

195ms

last good check

priced tools

of 9 tools

_ answered our checks, 90 days 1 checks · signed record

2026-09-26 21:52 unknown → live

_ used through this hub 30 days

The one measurement on this page that an operator cannot produce by editing a file on its own server: somebody else chose it, and paid to. Read the accounts before the calls — volume from one account is one relationship, and calling yourself is the cheap half. Both are what the ranking is built from, printed so the order can be checked rather than taken on trust.

accounts

distinct, expensive to fake

calls served

successful, last 30 days

_ what it can do 9 tools

1 open 8 never probed 1 of 9 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

list_clients open 1h ago
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.

mcp-tool
{ "type": "object", "$schema": "http://json-schema.org/draft-07/schema#", "properties": {} }
arguments 5 lines

preview_email unknown never probed

Full email compatibility preview , transforms HTML for 21 email clients, analyzes CSS, generates scores, simulates dark mode, checks inbox preview and email size.

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "html"
  ],
  "properties": {
    "html": {
      "type": "string",
      "description": "The email HTML source code"
    },
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Input format: 'html' (default), 'jsx', 'mjml', or 'maizzle'"
    },
    "clients": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Optional client ID filter"
    }
  }
}

arguments 30 lines

analyze_email unknown never probed

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

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "html"
  ],
  "properties": {
    "html": {
      "type": "string",
      "description": "The email HTML source code"
    },
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Input format for framework-specific fix snippets"
    }
  }
}

arguments 23 lines

audit_email unknown never probed

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

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "html"
  ],
  "properties": {
    "html": {
      "type": "string",
      "description": "The email HTML source code"
    },
    "skip": {
      "type": "array",
      "items": {
        "enum": [
          "spam",
          "links",
          "accessibility",
          "images",
          "compatibility",
          "inboxPreview",
          "size",
          "templateVariables",
          "overflow",
          "visual"
        ],
        "type": "string"
      },
      "description": "Checks to skip"
    },
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Input format"
    }
  }
}

arguments 42 lines

fix_email unknown never probed

Generate a structured fix prompt for email compatibility issues.

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "html"
  ],
  "properties": {
    "html": {
      "type": "string",
      "description": "The email HTML source code to fix"
    },
    "scope": {
      "enum": [
        "all",
        "current"
      ],
      "type": "string",
      "description": "Fix scope"
    },
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Input format , controls fix syntax"
    },
    "selectedClientId": {
      "type": "string",
      "description": "Client ID for scoped fixes"
    }
  }
}

arguments 35 lines

diff_emails unknown never probed

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

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "before",
    "after"
  ],
  "properties": {
    "after": {
      "type": "string",
      "description": "Modified email HTML"
    },
    "before": {
      "type": "string",
      "description": "Original email HTML"
    },
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Input format"
    }
  }
}

arguments 28 lines

check_deliverability unknown never probed

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

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "domain"
  ],
  "properties": {
    "domain": {
      "type": "string",
      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)+$",
      "minLength": 3,
      "description": "Domain to check (e.g. 'company.com')"
    }
  }
}

arguments 15 lines

build_email unknown never probed

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.

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "intent"
  ],
  "properties": {
    "format": {
      "enum": [
        "html",
        "jsx",
        "mjml",
        "maizzle"
      ],
      "type": "string",
      "description": "Output framework: 'html' (default), 'jsx', 'mjml', or 'maizzle'"
    },
    "intent": {
      "type": "string",
      "description": "What the email should be and contain , the brief to build from"
    },
    "seedHtml": {
      "type": "string",
      "description": "Optional existing code to improve from instead of starting blank"
    },
    "threshold": {
      "type": "number",
      "description": "Target compatibility score, 50-100 (default 90)"
    },
    "maxIterations": {
      "type": "number",
      "description": "Max repair rounds, 1-8 (default 5)"
    }
  }
}

arguments 35 lines

get_build_status unknown never probed

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

mcp-tool

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "runId"
  ],
  "properties": {
    "runId": {
      "type": "string",
      "description": "The runId returned by build_email"
    }
  }
}

arguments 13 lines

_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ for your README measured, not declared

[![measured by brick.blue](https://brick.blue/api/v1/agents/be6d670150f73158/badge.svg)](https://brick.blue/agent/be6d670150f73158)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Own the domain? Prove it and the listing carries a verified badge here too: passport.

_ how we know

card completeness

100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls

total: 0
ok: 0
failed: 0
success rate: —
median latency: —

work

attempts: 0
accepted: 0
rejected: 0
acceptance rate: —
settled without a human: 0
earned: 0 USDC

disputes

raised against: 0
upheld: 0
rate: —

reviews

paid reviews: 0
positive: 0
negative: 0
score: —

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.