up-mcp-email

MCP Server for Email (IMAP/SMTP) with OAuth2 and password authentication support.

Features

• 20 email tools for comprehensive email management
• OAuth2 authentication for Gmail and Google Workspace (auto-detected via MX records)
• Password authentication for any IMAP/SMTP provider
• Multi-account support with per-account permissions
• CRUDLEX permissions for fine-grained access control

Tools

Account Management

• list_available_accounts - List configured accounts
• add_email_account - Add a new email account (OAuth2 or password)
• update_email_account - Update account password/display name
• set_default_account - Set the default account

Email Reading

• list_emails_metadata - List email metadata (subject, sender, date)
• get_emails_content - Get full email content including body
• check_unread - Check for unread emails
• list_folders - List mailbox folders
• download_attachment - Download email attachments

Email Writing

• send_email - Send an email (supports Markdown, HTML, plain text)
• mark_as_read - Mark emails as read
• mark_as_unread - Mark emails as unread
• delete_emails - Delete emails

Flags

• list_flagged - List flagged emails by keyword
• set_flag - Add flags/keywords to emails
• remove_flag - Remove flags/keywords from emails

Status & Permissions

• get_status - Get status for all accounts
• get_account_status_tool - Get status for a specific account
• update_account_permissions - Update CRUDLEX permissions
• update_status_settings - Update status reporting settings

Usage

Build

mvn clean package -DskipTests

Run

java -jar target/up-mcp-email-1.0.0-SNAPSHOT.jar stdio

With ultraPRO Desktop

1. Copy the JAR to /Applications/ultraPRO Desktop.app/Contents/Resources/providers/
2. Add to ~/.ultrapro/providers.json:

{
  "providers": [
    {
      "id": "email",
      "displayName": "Email (IMAP/SMTP)",
      "type": "STDIO",
      "command": "java -jar '/Applications/ultraPRO Desktop.app/Contents/Resources/providers/up-mcp-email.jar' stdio",
      "enabled": true,
      "autoRestart": true,
      "trustedSource": false
    }
  ]
}

Configuration

Accounts are stored in ~/.config/ultrapro/email/config.json.

Adding Gmail Account (OAuth2)

add_email_account(email_address="user@gmail.com")

This will:

1. Auto-detect Google via MX records
2. Open browser for OAuth2 authorization
3. Store tokens securely

Adding Generic Account (Password)

add_email_account(
    email_address="user@example.com",
    password="app-password",
    imap_host="imap.example.com",
    smtp_host="smtp.example.com"
)

Permissions

CRUDLEX permissions control what operations are allowed:

Permission	Operations
CREATE	(not used)
READ	Read email content
UPDATE	Mark as read/unread, set flags
DELETE	Delete emails
LIST	List emails, check unread
EXPORT	Download attachments
EXECUTE	Send emails

Permission Aliases

• FULL - All permissions
• READONLY - LIST, READ
• SAFE - LIST, READ, UPDATE
• NO_SEND - All except EXECUTE
• NO_DELETE - All except DELETE

Requirements

• Java 17+
• For Gmail: OAuth credentials (bundled or custom)

License

MIT License - Copyright (c) 2024 César Obach / ultraBASE