MCP Servers · Communication

BigCactusLabs/dead-letter

Name: BigCactusLabs/dead-letter
Author: Various

Convert .eml email exports to Markdown with YAML front matter

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Our verdict

Not reviewed yet

We have not reviewed BigCactusLabs/dead-letter yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About BigCactusLabs/dead-letter

Dead Letter is a Python tool that converts .eml email files into Markdown documents with YAML front matter. It extracts metadata like subject, sender, and date and formats the email body as Markdown. The output is a clean plain-text representation suitable for further processing or archival.

Best for

Developers who need to batch convert .eml files to plain-text Markdown for archival or indexing

Use cases

Archive email exports as readable Markdown files
Migrate email content into static site generators or knowledge bases
Extract and transform email data for documentation or search indexing

Notes

4 stars on GitHub. Last updated 2026-07-13.

Pros

Simple focused tool with a single clear purpose
Lightweight open source implementation in Python
Produces structured output with YAML metadata

Cons

Only supports the .eml format, not other email exports
Does not handle attachments or render HTML email bodies
Limited adoption with only 4 stars on GitHub

Key facts

What we have checked

Days since the last commit: 0; Checked 26 Oct 2026GitHub
GitHub forks: 0; Checked 26 Oct 2026GitHub
GitHub stars: 8; Checked 26 Oct 2026GitHub
Days to a first reply on issues: 27.9; Checked 26 Oct 2026GitHub
Open issues: 25; Checked 26 Oct 2026GitHub
Releases in the last 90 days: 9; Checked 26 Oct 2026GitHub

Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.

How to use

How to set it up

As the listing publishes it. We have not run this install.

Install

pip install dead-letter            # core + CLI

Tools exposed

convert_eml
convert_eml_to_bundle
convert_directory
get_diagnostics

Clients the listing names (not checked here)

Claude Desktop, Claude Code

Example client config

{
  "mcpServers": {
    "dead-letter": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/dead-letter",
        "run",
        "--extra",
        "mcp",
        "dead-letter-mcp"
      ]
    }
  }
}

Install

Add BigCactusLabs/dead-letter to your client

Not verified yet

Our lab has not run this server yet. "Config checked" on a client means the recipe matches that client's documented config format; it does not mean we ran it.

Claude Code

Config checked

Run in your terminal (runs on your computer)

claude mcp add --transport stdio bigcactuslabs-dead-letter -- uvx --python 3.12 --from 'dead-letter[mcp]==0.4.9' dead-letter-mcp

Version 0.4.9 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Code's config docs

Claude Desktop

Config checked

Add to claude_desktop_config.json (runs on your computer)

{
  "mcpServers": {
    "bigcactuslabs-dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.9",
        "dead-letter-mcp"
      ]
    }
  }
}

Version 0.4.9 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Desktop's config docs

Cursor

Config checked

Add to .cursor/mcp.json (runs on your computer)

{
  "mcpServers": {
    "bigcactuslabs-dead-letter": {
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.9",
        "dead-letter-mcp"
      ]
    }
  }
}

Version 0.4.9 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Cursor's config docs

VS Code

Config checked

Add to .vscode/mcp.json (runs on your computer)

{
  "servers": {
    "bigcactuslabs-dead-letter": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "--python",
        "3.12",
        "--from",
        "dead-letter[mcp]==0.4.9",
        "dead-letter-mcp"
      ]
    }
  }
}

Version 0.4.9 · From the Official MCP registry, read 24 Oct 2026 · Format checked against VS Code's config docs

Codex

Config checked

Add to ~/.codex/config.toml (runs on your computer)

[mcp_servers.bigcactuslabs-dead-letter]
command = "uvx"
args = ["--python", "3.12", "--from", "dead-letter[mcp]==0.4.9", "dead-letter-mcp"]

Version 0.4.9 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Codex's config docs

ChatGPT: ChatGPT connects only to remote servers that need no API key.

Recipes come from the server's entry in the official MCP registry. Check the package name before you run it, and keep keys out of shared files.

Works with

What BigCactusLabs/dead-letter connects to

5 clients, each with how we know and when we checked.

Works with	Type	How we know	Checked
Claude Code	Client	Install recipe matches the client's documented formatRuns locally, version 0.4.9Config checked	24 Oct 2026Claude Code docs
Claude Desktop	Client	Install recipe matches the client's documented formatRuns locally, version 0.4.9Config checked	24 Oct 2026Claude Desktop docs
Cursor	Client	Install recipe matches the client's documented formatRuns locally, version 0.4.9Config checked	24 Oct 2026Cursor docs
VS Code	Client	Install recipe matches the client's documented formatRuns locally, version 0.4.9Config checked	24 Oct 2026VS Code docs
Codex	Client	Install recipe matches the client's documented formatRuns locally, version 0.4.9Config checked	24 Oct 2026Codex docs

Health and security

Is BigCactusLabs/dead-letter looked after, and what do its setup files show

Health score

47 out of 100

Does someone look after this repository? It does not say the code is good or safe. Worked out from GitHub signals checked 26 Oct 2026. How it is worked out

Part	Points	What we saw
Recent activity	30 of 30	Last push 0 days ago
Releases	15 of 15	9 releases in 90 days
Issue replies	1.6 of 20	First reply in 27.9 days (median)
Maintainer	0 of 15	Owned by a single user
Official source	0 of 20	Community server

Sources

Where this comes from

GitHubRegistry
Checked 26 Oct 2026 · Days since the last commit, GitHub forks, GitHub stars, Days to a first reply on issues, Open issues, Releases in the last 90 days

A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.

Changelog

What changed

No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.

Pairs with

Other entries in the index that connect to this one. Click through to see the chain.

Pairs with1 entry

MMCPlowCatalogue

microsoft/markitdown

Various

Python tool for converting files and office documents to Markdown.

★ 138,078

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