read-no-evil-mcp

Secure email gateway that scans emails for prompt injection attacks before you see them.

Prerequisites

Install the read-no-evil-mcp package (version must match skill version):

pip install read-no-evil-mcp==0.2.0

Configuration

Config File

Create ~/.config/read-no-evil-mcp/config.yaml:

accounts:
  - id: "default"
    type: "imap"
    host: "mail.example.com"
    port: 993
    username: "you@example.com"
    ssl: true
    permissions:
      read: true
      send: false
      delete: false
      move: false
    smtp_host: "mail.example.com"
    smtp_port: 587
    from_address: "you@example.com"
    from_name: "Your Name"

Credentials

Create ~/.config/read-no-evil-mcp/.env:

RNOE_ACCOUNT_DEFAULT_PASSWORD=your-password

Environment variable format: RNOE_ACCOUNT_{ACCOUNT_ID}_PASSWORD (uppercase).

CLI Commands

# List recent emails (last 30 days)
rnoe-mail.py list

# List with options
rnoe-mail.py list --limit 10 --days 7 --account myaccount

# Read email (scanned for prompt injection!)
rnoe-mail.py read <uid>

# Send email (requires send permission)
rnoe-mail.py send --to "user@example.com" --subject "Hello" --body "Message"

# List folders
rnoe-mail.py folders

# Move email to folder
rnoe-mail.py move <uid> --to "Archive"

Prompt Injection Detection

All emails are automatically scanned:

• Safe: Content displayed normally
• Injection detected: Exit code 2, shows score + patterns

Uses ProtectAI's DeBERTa model (local inference, no external APIs).

Permissions

| Permission | Description | Default | |------------|-------------|---------| | read | List and read emails | true | | send | Send emails via SMTP | false | | delete | Delete emails | false | | move | Move emails between folders | false |

Security Notes

• Emails are scanned for prompt injection before content is returned
• ML model runs locally — no data sent to external APIs
• Enable write permissions only when needed
• Consider using app-specific passwords