# rubit-mcp-mail (pypi · rubit-mcp-mail)

Read-only MCP server for your mail — provider-agnostic IMAP that never marks a message as read.

- Trust score: 55/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- pypi · `rubit-mcp-mail`: 55/100 (this document), [markdown](https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail.md), [page](https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail)

## Channel facts

- Registry: `pypi`
- Package: `rubit-mcp-mail`
- Version: `1.0.0`
- Transport: `stdio`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Supply Chain Security**: 50/100
  - Malware scan not yet available for this package.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs setuptools.build_meta at install time, a recognised native-build step with no shell scripting around it.
  - 4 of 53 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 32/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - License check failed: no license is declared.
  - Actively maintained (last published 3 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 85/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 664 tokens (~110/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

**Unverified: 1 category.** A category scored 0 because we could not verify it: 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.

## Install

### How do I install the rubit-mcp-mail server?

rubit-mcp-mail runs locally as a PyPI package, launched with uvx rubit-mcp-mail. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add bgalmes-rubit-mcp-mail -- uvx rubit-mcp-mail
```

### Cursor

```json
{
  "mcpServers": {
    "bgalmes-rubit-mcp-mail": {
      "command": "uvx",
      "args": [
        "rubit-mcp-mail"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "bgalmes-rubit-mcp-mail": {
      "command": "uvx",
      "args": [
        "rubit-mcp-mail"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add bgalmes-rubit-mcp-mail -- uvx rubit-mcp-mail
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "bgalmes-rubit-mcp-mail": {
      "type": "local",
      "command": [
        "uvx",
        "rubit-mcp-mail"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add bgalmes-rubit-mcp-mail --command uvx --arg rubit-mcp-mail
```

### Hermes

```yaml
mcp_servers:
  bgalmes-rubit-mcp-mail:
    command: "uvx"
    args: ["rubit-mcp-mail"]
```

### Netclaw

```json
{
  "McpServers": {
    "bgalmes-rubit-mcp-mail": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "rubit-mcp-mail"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add bgalmes-rubit-mcp-mail -t stdio -c uvx -a rubit-mcp-mail
```

### Other

```json
{
  "mcpServers": {
    "bgalmes-rubit-mcp-mail": {
      "command": "uvx",
      "args": [
        "rubit-mcp-mail"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-19 (score 55, 0)

- [functional regression] Security disclosure: unverified → fail

### 2026-09-18 (score 55, 0)

- [functional regression] Security disclosure: fail → unverified

### 2026-09-16 (score 55)

First indexed and scored.

## MCP tools (6)

### `list_accounts` (~29 tokens)

List configured mail accounts and whether each is authenticated.

Call this first if another tool reports an authentication problem.

Output parameters:

- `result`

### `list_folders` (~69 tokens)

List the folders in a mailbox with message and unread counts.

Each folder has a normalized `role` that is stable across providers, so you
can ask for 'junk' without knowing the server calls it 'Junk Email'.

Input parameters:

- `account`: Account name. Optional when only one is configured.

Output parameters:

- `result`

### `list_messages` (~124 tokens)

Browse messages in a folder, newest first.

Returns summaries only (no bodies). Pass a returned `handle` to read_message
to get the full text.

Input parameters:

- `account`: Account name. Optional when only one is configured.
- `folder` (string): Folder role ('inbox', 'sent', 'junk', 'trash', 'drafts', 'archive') or a raw server folder name.
- `limit` (integer): Max messages to return.
- `offset` (integer): Messages to skip, for paging.
- `unread_only` (boolean): Only unread mail.

Output parameters:

- `result`

### `search_messages` (~184 tokens)

Search a folder. All supplied criteria are combined with AND.

Server-side IMAP search, so it works over the whole folder without
downloading anything. Results are newest first.

Input parameters:

- `account`: Account name. Optional when only one is configured.
- `before`: Strictly before this date.
- `folder` (string): Folder role ('inbox', 'sent', 'junk', 'trash', 'drafts', 'archive') or a raw server folder name.
- `from_`: Substring of the sender address or name.
- `limit` (integer): Max messages to return.
- `offset` (integer): Messages to skip, for paging.
- `since`: On or after this date.
- `subject`: Substring of the subject.
- `text`: Free text, matched against headers and body.
- `unread_only` (boolean): Only unread mail.

Output parameters:

- `result`

### `read_message` (~85 tokens)

Read one message in full: headers, body text, and attachment metadata.

HTML-only mail is converted to text. This does NOT mark the message as read.

Input parameters:

- `account`: Account name. Optional when only one is configured.
- `handle` (string, required): A handle from list_messages or search_messages.
- `max_chars` (integer): Truncate the body beyond this many characters.

Output parameters:

- `result`

### `get_attachment` (~90 tokens)

Download one attachment into the configured download directory.

Returns the path it was saved to. Files are only ever written inside that
one directory; the mailbox itself is not modified.

Input parameters:

- `account`: Account name. Optional when only one is configured.
- `handle` (string, required): A handle from list_messages or search_messages.
- `part_id` (string, required): The `part_id` from read_message's attachments.

Output parameters:

- `result`

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail#diagnostics

## Score history

- 2026-09-20: 55
- 2026-09-19: 55
- 2026-09-18: 55
- 2026-09-17: 55
- 2026-09-16: 55

## Common questions

### What is the rubit-mcp-mail server?

rubit-mcp-mail is listed in the public MCP registry as io.github.bgalmes/rubit-mcp-mail. Read-only MCP server for your mail, provider-agnostic IMAP that never marks a message as read. This page covers its PyPI package (rubit-mcp-mail).

### Is the rubit-mcp-mail server safe to use?

rubit-mcp-mail scores 55 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. 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 rubit-mcp-mail server expose?

rubit-mcp-mail exposes 6 tools: list_accounts, list_folders, list_messages, search_messages, read_message, get_attachment. Their descriptions and schemas cost roughly 581 tokens of context every time the server is loaded.

### Is the rubit-mcp-mail server still maintained?

rubit-mcp-mail 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.

## Links

- PyPI project: https://pypi.org/project/rubit-mcp-mail/
- Socket report: https://socket.dev/pypi/package/rubit-mcp-mail
- Repository: https://github.com/bgalmes/rubit-mcp-mail
- Website: https://bgalmes.github.io/rubit-mcp-mail/
- Changelog RSS feed: https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail.xml
- Changelog JSON feed: https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail.json
- HTML version of this page: https://verifymcp.io/servers/bgalmes-rubit-mcp-mail/rubit-mcp-mail