SERVER

dead-letter

Rank #2,643

io.github.BigCactusLabs/dead-letter

Convert .eml email exports to clean Markdown for RAG, LLM pipelines, and local knowledge bases

4 versions

8 GitHub stars

by bigcactuslabs (1 servers)View repository ↗Claim this server

First listed

May 26, 2026

Last publish date

Sep 19, 2026

OVERVIEW

dead-letter is a Model Context Protocol (MCP) server published by bigcactuslabs. It ranks #2,643 of 132,046 servers tracked on MCP Toplist, and its repository has 8 GitHub stars. dead-letter is listed across 3 registries — Official MCP, PulseMCP and Glama, with 4 tracked versions. It was first listed on May 26, 2026 and most recently updated on Sep 19, 2026.

STANDING

#2,643of 132,046 tracked serversTop 5%

Ranks ahead of 129,403 of 132,046 servers on MCP Toplist.

CONNECT

Use dead-letter

No setupRuns out of the box

No credentials or required configuration declared — add it to your MCP client and go.

Python package (PyPI)

claude mcp add dead-letter -- uvx --python 3.12 --from "dead-letter[mcp]==0.4.0" dead-letter dead-letter-mcp

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

claude mcp add dead-letter -- docker run -i --rm --network none --read-only --cap-drop ALL --security-opt no-new-privileges --tmpfs /tmp:rw,noexec,nosuid,size=64m --user "{container_user}" --mount "type=bind,source={input_directory},target=/input,readonly" --mount "type=bind,source={output_directory},target=/output" ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22

Python package (PyPI)

[mcp_servers.dead-letter]
command = "uvx"
args = ["--python", "3.12", "--from", "dead-letter[mcp]==0.4.0", "dead-letter", "dead-letter-mcp"]

Add to ~/.codex/config.toml.

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

[mcp_servers.dead-letter]
command = "docker"
args = ["run", "-i", "--rm", "--network", "none", "--read-only", "--cap-drop", "ALL", "--security-opt", "no-new-privileges", "--tmpfs", "/tmp:rw,noexec,nosuid,size=64m", "--user", "{container_user}", "--mount", "type=bind,source={input_directory},target=/input,readonly", "--mount", "type=bind,source={output_directory},target=/output", "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"]

Add to ~/.codex/config.toml.

Python package (PyPI)

{
  "mcpServers": {
    "dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.0",
        "dead-letter",
        "dead-letter-mcp"
      ]
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config).

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

{
  "mcpServers": {
    "dead-letter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "--network",
        "none",
        "--read-only",
        "--cap-drop",
        "ALL",
        "--security-opt",
        "no-new-privileges",
        "--tmpfs",
        "/tmp:rw,noexec,nosuid,size=64m",
        "--user",
        "{container_user}",
        "--mount",
        "type=bind,source={input_directory},target=/input,readonly",
        "--mount",
        "type=bind,source={output_directory},target=/output",
        "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"
      ]
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config).

Python package (PyPI)

{
  "mcpServers": {
    "dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.0",
        "dead-letter",
        "dead-letter-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

{
  "mcpServers": {
    "dead-letter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "--network",
        "none",
        "--read-only",
        "--cap-drop",
        "ALL",
        "--security-opt",
        "no-new-privileges",
        "--tmpfs",
        "/tmp:rw,noexec,nosuid,size=64m",
        "--user",
        "{container_user}",
        "--mount",
        "type=bind,source={input_directory},target=/input,readonly",
        "--mount",
        "type=bind,source={output_directory},target=/output",
        "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

Python package (PyPI)

{
  "servers": {
    "dead-letter": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.0",
        "dead-letter",
        "dead-letter-mcp"
      ]
    }
  }
}

Save as .vscode/mcp.json in your workspace.

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

{
  "servers": {
    "dead-letter": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "--network",
        "none",
        "--read-only",
        "--cap-drop",
        "ALL",
        "--security-opt",
        "no-new-privileges",
        "--tmpfs",
        "/tmp:rw,noexec,nosuid,size=64m",
        "--user",
        "{container_user}",
        "--mount",
        "type=bind,source={input_directory},target=/input,readonly",
        "--mount",
        "type=bind,source={output_directory},target=/output",
        "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"
      ]
    }
  }
}

Save as .vscode/mcp.json in your workspace.

Python package (PyPI)

{
  "mcpServers": {
    "dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.0",
        "dead-letter",
        "dead-letter-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

{
  "mcpServers": {
    "dead-letter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "--network",
        "none",
        "--read-only",
        "--cap-drop",
        "ALL",
        "--security-opt",
        "no-new-privileges",
        "--tmpfs",
        "/tmp:rw,noexec,nosuid,size=64m",
        "--user",
        "{container_user}",
        "--mount",
        "type=bind,source={input_directory},target=/input,readonly",
        "--mount",
        "type=bind,source={output_directory},target=/output",
        "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Python package (PyPI)

{
  "mcpServers": {
    "dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.0",
        "dead-letter",
        "dead-letter-mcp"
      ]
    }
  }
}

MCP bundle

Published as mcp bundle `https://github.com/BigCactusLabs/dead-letter/releases/download/v0.4.0/dead-letter-mcp-0.4.0.mcpb` — install it through your client’s extension manager.

Docker image

{
  "mcpServers": {
    "dead-letter": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "--network",
        "none",
        "--read-only",
        "--cap-drop",
        "ALL",
        "--security-opt",
        "no-new-privileges",
        "--tmpfs",
        "/tmp:rw,noexec,nosuid,size=64m",
        "--user",
        "{container_user}",
        "--mount",
        "type=bind,source={input_directory},target=/input,readonly",
        "--mount",
        "type=bind,source={output_directory},target=/output",
        "ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22"
      ]
    }
  }
}

BADGE

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Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.BigCactusLabs%2Fdead-letter.svg)](https://mcptoplist.com/server/io.github.BigCactusLabs%2Fdead-letter)

HTML

<a href="https://mcptoplist.com/server/io.github.BigCactusLabs%2Fdead-letter"><img src="https://mcptoplist.com/badge/io.github.BigCactusLabs%2Fdead-letter.svg" alt="MCP Toplist: Top 5% of 132,046" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

REGISTRIES

Listed on 3 registries

PulseMCP

Official MCP

Glama

ORGANIZATION

bigcactuslabs

Organization

bigcactuslabs

Servers in org

Versions across org

VERSIONS

Available versions (4)

Version	Published
0.4.0	Sep 19, 2026
0.3.1	Sep 19, 2026
0.2.5	Aug 21, 2026
0.2.4	Jul 6, 2026

FAQ

Frequently asked questions

Who maintains dead-letter?: dead-letter is maintained by bigcactuslabs, which publishes 1 MCP server (4 total versions) tracked on MCP Toplist.
Is dead-letter listed on the Official MCP Registry?: Yes — dead-letter is listed on the Official MCP Registry, alongside PulseMCP and Glama.
How many versions does dead-letter have?: MCP Toplist tracks 4 versions of dead-letter, most recently published on Sep 19, 2026.
Where can I find the source code for dead-letter?: The source code for dead-letter is hosted at github.com/bigcactuslabs/dead-letter.

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