# io.github.sethbang/proton-mail-mcp

Unofficial Proton Mail MCP — send, read, search & organize email over SMTP and IMAP

- **Type:** MCP server
- **Trust:** 85/100 (A), scored on the package rubric
- **Verification:** verified (build provenance)
- **Version:** 1.0.2
- **Author:** io.github.sethbang
- **License:** Unknown
- **npm:** proton-mail-mcp
- **Source:** https://github.com/sethbang/proton-mail-mcp
- **Compatible clients:** claude-code, cursor, copilot, gemini (basis: transport)

## Trust

85/100 (A), scored on the package rubric
- Publisher verified: no
- Build provenance: verified attestation
- npm trusted publishing (OIDC): yes
- Install scripts: nothing suspicious found
- Prompt-injection scan: not run
- Obfuscation scan: not run
- Evidence age: 115 days — stale; the grade is a claim about the present made from dated evidence

## Security scan

- **Status:** clean
- **Scanned:** 2026-06-13T12:16:33.736Z
- **Version scanned:** 1.0.2
- **CVEs:** none found by OSV at scan time

## Tools

32 declared. Statically extracted from the shipped source — a floor on the surface, not a census.
- `send_email`
- `reply_email`
- `reply_all_email`
- `forward_email`
- `list_folders`
- `list_messages`
- `read_message`
- `list_attachments`
- `download_attachment`
- `search_messages`
- `move_message`
- `delete_message`
- `update_message_flags`
- `get_thread`
- `mark_all_read`
- `save_draft`
- `bulk_move`
- `bulk_delete`
- `bulk_update_flags`
- `create_folder`
- `create_label`
- `rename_folder`
- `delete_folder`
- `update_message_labels`
- `bulk_update_labels`
- `empty_folder`
- `count_messages`
- `folder_stats`
- `top_senders`
- `move_thread`
- `delete_thread`
- `flag_thread`

## Install

**Verdict: review** — Installable, but 1 thing to check first: The last scan is 115 days old — the evidence behind this verdict is dated.
**Cautions** (coverage gaps and advisories — never blocking)
- The last scan is 115 days old — the evidence behind this verdict is dated.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"proton-mail\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"proton-mail-mcp\"\n      ]\n    }\n  }\n}"
```

## Blast radius

Extensive to critical — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: deletes data; runs on your machine.
- Floor 42, ceiling 66 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/io.github.sethbang%2Fproton-mail-mcp
- Install plan: https://forgeregistry.com/api/v1/packages/io.github.sethbang%2Fproton-mail-mcp/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/io.github.sethbang%2Fproton-mail-mcp
- HTML page: https://forgeregistry.com/registry/io.github.sethbang%2Fproton-mail-mcp
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.