Emailmd vs MCP Hey

In-depth architectural comparison of the Emailmd and MCP Hey MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Emailmd when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Markdown to responsive, email-safe HTML conversion, Plain text email version generation, Linting for email deliverability issues.

Explore Emailmd Details

Choose MCP Hey when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• Primary tools included: Read email across Hey mailbox areas, Search with a local SQLite full-text index, Send, reply to, and forward messages.

Explore MCP Hey Details

Feature & Specification Comparison

Specification	Emailmd anypost Communication	MCP Hey Sealjay Communication
Summary	Write and preview emails from your assistant. Renders markdown into email-safe HTML that holds up in Outlook and Gmail, lints drafts for deliverability problems, and returns a live preview link. Hosted with no API key, or run it locally with npx emailmd mcp.	Local MCP server for Hey.com email. Read, search, send, reply, and manage the screener via locally cached session from Hey's webview auth.
Category & Scope

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "anypost-emailmd": {
      "command": "npx",
      "args": [
        "-y",
        "emailmd"
      ]
    }
  }
}

{
  "mcpServers": {
    "sealjay-mcp-hey": {
      "command": "npx",
      "args": [
        "-y",
        "sealjay-mcp-hey"
      ]
    }
  }
}

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