dead-letter
OCI · GHCR.IO/BIGCACTUSLABS/DEAD-LETTER@SHA256:B0DC1C4D76370BF2315A9D5FE46D1BDFE3F932B1894C8EDF51F71CDA2B95AC22 · 3 COMPONENTS · SCANNED SEP 21
Convert .eml email exports to clean Markdown for RAG, LLM pipelines, and local knowledge bases
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security0
- Malware scan not yet available for this package.Unverified
- Known CVEs could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.Unverified
- Install-script risk not yet assessed.Unverified
- Dependency health could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.Unverified
Provenance & Transparency35
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- License check failed: the license (PolyForm-Noncommercial-1.0.0) isn't a recognized OSI-approved license. See how to fix → Fail
- Actively maintained (last published 0 days ago).Pass
- Publishes a security disclosure policy (SECURITY.md).Pass
Schema Quality & AI Usability40
- AI-judged instruction clarity (fair).Partial
- Context-footprint check failed: tool/resource definitions use about 832 tokens (~208/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage71
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
Unverified: 2 categories
Categories scored 0 because we could not verify them: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.
Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.
oci · ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 20 Sept 26 30
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed oci/ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | oci |
| Reason | No attestation published |
Background: How many MCP packages publish verified provenance →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
convert_directory ~175
Batch convert all .eml files in a directory to Markdown. Recursively finds all .eml files and converts them. Returns a JSON summary with total, successes, failures, output_paths, and errors. Use convert_eml to retrieve individual converted file content.
| Name | Type | Req | Description |
|---|---|---|---|
| directory | string | yes | – |
| dry_run | boolean | – | – |
| embed_inline_images | – | – | – |
| include_all_headers | – | – | – |
| include_raw_html | – | – | – |
| no_calendar_summary | – | – | – |
| output_directory | – | – | – |
| preset | string | – | – |
| strip_disclaimers | – | – | – |
| strip_quoted_headers | – | – | – |
| strip_signature_images | – | – | – |
| strip_signatures | – | – | – |
| strip_tracking_pixels | – | – | – |
| thread_mode | string | – | – |
| thread_order | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
convert_eml ~218
Convert a .eml email file to Markdown with YAML front matter. Returns the full Markdown content (front matter + body). When output_path is provided, also writes the file to disk. Presets bundle common flag combinations: - default: strips signatures, tracking pixels, signature images - clean: default + strips disclaimers and quoted headers - verbose: includes all headers and raw HTML - raw: no stripping, preserves everything Individual flags override the preset when provided.
| Name | Type | Req | Description |
|---|---|---|---|
| embed_inline_images | – | – | – |
| eml_path | string | yes | – |
| include_all_headers | – | – | – |
| include_raw_html | – | – | – |
| no_calendar_summary | – | – | – |
| output_path | – | – | – |
| preset | string | – | – |
| strip_disclaimers | – | – | – |
| strip_quoted_headers | – | – | – |
| strip_signature_images | – | – | – |
| strip_signatures | – | – | – |
| strip_tracking_pixels | – | – | – |
| thread_mode | string | – | – |
| thread_order | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
convert_eml_to_bundle ~236
Convert a .eml file to a self-contained bundle with markdown and attachments. Creates a directory containing the converted markdown, extracted attachments, and optionally the original .eml source. source_handling only accepts 'copy' over MCP: the original .eml is copied into the bundle and left untouched. The 'move' and 'delete' modes are rejected here — use the CLI or the Python API for those. Returns JSON with bundle_path, markdown_path, attachment_paths, and optional diagnostics.
| Name | Type | Req | Description |
|---|---|---|---|
| bundle_root | string | yes | – |
| embed_inline_images | – | – | – |
| eml_path | string | yes | – |
| include_all_headers | – | – | – |
| include_raw_html | – | – | – |
| no_calendar_summary | – | – | – |
| preset | string | – | – |
| source_handling | string | – | – |
| strip_disclaimers | – | – | – |
| strip_quoted_headers | – | – | – |
| strip_signature_images | – | – | – |
| strip_signatures | – | – | – |
| strip_tracking_pixels | – | – | – |
| thread_mode | string | – | – |
| thread_order | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
get_diagnostics ~203
Inspect email quality and structure without writing permanent files. Use this to assess conversion quality before committing, or to troubleshoot problematic .eml files. Always returns JSON with: state (normal/degraded/review_recommended), selected_body, segmentation_path, client_hint, confidence, fallback_used, and warnings. Two keys are conditional: stripped_images appears only when images were removed, and attachments only when the message had attachments eligible for retention.
| Name | Type | Req | Description |
|---|---|---|---|
| embed_inline_images | – | – | – |
| eml_path | string | yes | – |
| include_all_headers | – | – | – |
| include_raw_html | – | – | – |
| no_calendar_summary | – | – | – |
| preset | string | – | – |
| strip_disclaimers | – | – | – |
| strip_quoted_headers | – | – | – |
| strip_signature_images | – | – | – |
| strip_signatures | – | – | – |
| strip_tracking_pixels | – | – | – |
| thread_mode | string | – | – |
| thread_order | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| result | string | yes | – |
No examples provided.
What is the dead-letter MCP server?
dead-letter is an MCP server listed in the public MCP registry as io.github.BigCactusLabs/dead-letter. Convert .eml email exports to clean Markdown for RAG, LLM pipelines, and local knowledge bases. This page covers its container image (ghcr.io/bigcactuslabs/dead-letter@sha256:b0dc1c4d76370bf2315a9d5fe46d1bdfe3f932b1894c8edf51f71cda2b95ac22).
Is the dead-letter MCP server safe to use?
dead-letter scores 30 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the dead-letter MCP server expose?
dead-letter exposes 4 tools: convert_eml, convert_eml_to_bundle, convert_directory, get_diagnostics. Their descriptions and schemas cost roughly 832 tokens of context every time the server is loaded.
Is the dead-letter MCP server still maintained?
dead-letter is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the dead-letter MCP server under?
dead-letter declares the PolyForm-Noncommercial-1.0.0 licence, which is not on the OSI-approved list. Read the terms before using it at work, and note this covers the source only, not the cost of any service it calls.