@fadeaway-ai/gmail-mcp-server

v0.1.1

Published

7 months ago

A Model Context Protocol (MCP) server for Gmail integration. This server enables AI assistants to manage Gmail through natural language interactions.

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rothfels

junhongwang

elliottburris

Gmail MCP Server

A Model Context Protocol (MCP) server for Gmail integration. This server enables AI assistants to manage Gmail through natural language interactions.

Features

Send emails with subject, content, attachments, and recipients
Full attachment support - send and receive file attachments
Download email attachments to local filesystem
Support for HTML emails and multipart messages with both HTML and plain text versions
Full support for international characters in subject lines and email content
Read email messages by ID with advanced MIME structure handling
Enhanced attachment display showing filenames, types, sizes, and download IDs
Search emails with various criteria (subject, sender, date range)
Comprehensive label management with ability to create, update, delete and list labels
List all available Gmail labels (system and user-defined)
List emails in inbox, sent, or custom labels
Mark emails as read/unread
Move emails to different labels/folders
Delete emails
Batch operations for efficiently processing multiple emails at once
Full integration with Gmail API
Support for both Desktop and Web application credentials
Global credential storage for convenience

Available Tools

The server provides the following tools that can be used through Claude Desktop:

1. Send Email (`send_email`)

Sends a new email immediately. Supports plain text, HTML, or multipart emails with optional file attachments.

Basic Email:

{
  "to": ["[email protected]"],
  "subject": "Meeting Tomorrow",
  "body": "Hi,\n\nJust a reminder about our meeting tomorrow at 10 AM.\n\nBest regards",
  "cc": ["[email protected]"],
  "bcc": ["[email protected]"],
  "mimeType": "text/plain"
}

Email with Attachments:

{
  "to": ["[email protected]"],
  "subject": "Project Files",
  "body": "Hi,\n\nPlease find the project files attached.\n\nBest regards",
  "attachments": [
    "/path/to/document.pdf",
    "/path/to/spreadsheet.xlsx",
    "/path/to/presentation.pptx"
  ]
}

HTML Email Example:

{
  "to": ["[email protected]"],
  "subject": "Meeting Tomorrow",
  "mimeType": "text/html",
  "body": "<html><body><h1>Meeting Reminder</h1><p>Just a reminder about our <b>meeting tomorrow</b> at 10 AM.</p><p>Best regards</p></body></html>"
}

Multipart Email Example (HTML + Plain Text):

{
  "to": ["[email protected]"],
  "subject": "Meeting Tomorrow",
  "mimeType": "multipart/alternative",
  "body": "Hi,\n\nJust a reminder about our meeting tomorrow at 10 AM.\n\nBest regards",
  "htmlBody": "<html><body><h1>Meeting Reminder</h1><p>Just a reminder about our <b>meeting tomorrow</b> at 10 AM.</p><p>Best regards</p></body></html>"
}

2. Draft Email (`draft_email`)

Creates a draft email without sending it. Also supports attachments.

{
  "to": ["[email protected]"],
  "subject": "Draft Report",
  "body": "Here's the draft report for your review.",
  "cc": ["[email protected]"],
  "attachments": ["/path/to/draft_report.docx"]
}

3. Read Email (`read_email`)

Retrieves the content of a specific email by its ID. Now shows enhanced attachment information.

{
  "messageId": "182ab45cd67ef"
}

Enhanced Response includes attachment details:

Subject: Project Files
From: [email protected]
To: [email protected]
Date: Thu, 19 Jun 2025 10:30:00 -0400

Email body content here...

Attachments (2):
- document.pdf (application/pdf, 245 KB, ID: ANGjdJ9fkTs-i3GCQo5o97f_itG...)
- spreadsheet.xlsx (application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 89 KB, ID: BWHkeL8gkUt-j4HDRp6o98g_juI...)

4. Download Attachment (`download_attachment`)

NEW: Downloads email attachments to your local filesystem.

{
  "messageId": "182ab45cd67ef",
  "attachmentId": "ANGjdJ9fkTs-i3GCQo5o97f_itG...",
  "savePath": "/path/to/downloads",
  "filename": "downloaded_document.pdf"
}

Parameters:

messageId: The ID of the email containing the attachment
attachmentId: The attachment ID (shown in enhanced email display)
savePath: Directory to save the file (optional, defaults to current directory)
filename: Custom filename (optional, uses original filename if not provided)

5. Search Emails (`search_emails`)

Searches for emails using Gmail search syntax.

{
  "query": "from:[email protected] after:2024/01/01 has:attachment",
  "maxResults": 10
}

6. Modify Email (`modify_email`)

Adds or removes labels from emails (move to different folders, archive, etc.).

{
  "messageId": "182ab45cd67ef",
  "addLabelIds": ["IMPORTANT"],
  "removeLabelIds": ["INBOX"]
}

7. Delete Email (`delete_email`)

Permanently deletes an email.

{
  "messageId": "182ab45cd67ef"
}

8. List Email Labels (`list_email_labels`)

Retrieves all available Gmail labels.

{}

9. Create Label (`create_label`)

Creates a new Gmail label.

{
  "name": "Important Projects",
  "messageListVisibility": "show",
  "labelListVisibility": "labelShow"
}

10. Update Label (`update_label`)

Updates an existing Gmail label.

{
  "id": "Label_1234567890",
  "name": "Urgent Projects",
  "messageListVisibility": "show",
  "labelListVisibility": "labelShow"
}

11. Delete Label (`delete_label`)

Deletes a Gmail label.

{
  "id": "Label_1234567890"
}

12. Get or Create Label (`get_or_create_label`)

Gets an existing label by name or creates it if it doesn't exist.

{
  "name": "Project XYZ",
  "messageListVisibility": "show",
  "labelListVisibility": "labelShow"
}

13. Batch Modify Emails (`batch_modify_emails`)

Modifies labels for multiple emails in efficient batches.

{
  "messageIds": ["182ab45cd67ef", "182ab45cd67eg", "182ab45cd67eh"],
  "addLabelIds": ["IMPORTANT"],
  "removeLabelIds": ["INBOX"],
  "batchSize": 50
}

14. Batch Delete Emails (`batch_delete_emails`)

Permanently deletes multiple emails in efficient batches.

{
  "messageIds": ["182ab45cd67ef", "182ab45cd67eg", "182ab45cd67eh"],
  "batchSize": 50
}

Advanced Search Syntax

The search_emails tool supports Gmail's powerful search operators:

| Operator | Example | Description | |----------|---------|-------------| | from: | from:[email protected] | Emails from a specific sender | | to: | to:[email protected] | Emails sent to a specific recipient | | subject: | subject:"meeting notes" | Emails with specific text in the subject | | has:attachment | has:attachment | Emails with attachments | | after: | after:2024/01/01 | Emails received after a date | | before: | before:2024/02/01 | Emails received before a date | | is: | is:unread | Emails with a specific state | | label: | label:work | Emails with a specific label |

You can combine multiple operators: from:[email protected] after:2024/01/01 has:attachment

Advanced Features

Email Attachment Support

The server provides comprehensive attachment functionality:

Sending Attachments: Include file paths in the attachments array when sending or drafting emails
Attachment Detection: Automatically detects MIME types and file sizes
Download Capability: Download any email attachment to your local filesystem
Enhanced Display: View detailed attachment information including filenames, types, sizes, and download IDs
Multiple Formats: Support for all common file types (documents, images, archives, etc.)
RFC822 Compliance: Uses Nodemailer for proper MIME message formatting

Supported File Types: All standard file types including PDF, DOCX, XLSX, PPTX, images (PNG, JPG, GIF), archives (ZIP, RAR), and more.

Email Content Extraction

The server intelligently extracts email content from complex MIME structures:

Prioritizes plain text content when available
Falls back to HTML content if plain text is not available
Handles multi-part MIME messages with nested parts
Processes attachments information (filename, type, size, download ID)
Preserves original email headers (From, To, Subject, Date)

International Character Support

The server fully supports non-ASCII characters in email subjects and content, including:

Turkish, Chinese, Japanese, Korean, and other non-Latin alphabets
Special characters and symbols
Proper encoding ensures correct display in email clients

Comprehensive Label Management

The server provides a complete set of tools for managing Gmail labels:

Create Labels: Create new labels with customizable visibility settings
Update Labels: Rename labels or change their visibility settings
Delete Labels: Remove user-created labels (system labels are protected)
Find or Create: Get a label by name or automatically create it if not found
List All Labels: View all system and user labels with detailed information
Label Visibility Options: Control how labels appear in message and label lists

Label visibility settings include:

messageListVisibility: Controls whether the label appears in the message list (show or hide)
labelListVisibility: Controls how the label appears in the label list (labelShow, labelShowIfUnread, or labelHide)

These label management features enable sophisticated organization of emails directly through Claude, without needing to switch to the Gmail interface.

Batch Operations

The server includes efficient batch processing capabilities:

Process up to 50 emails at once (configurable batch size)
Automatic chunking of large email sets to avoid API limits
Detailed success/failure reporting for each operation
Graceful error handling with individual retries
Perfect for bulk inbox management and organization tasks

Security Notes

The server uses offline access to maintain persistent authentication
Never share or commit your credentials to version control
Regularly review and revoke unused access in your Google Account settings
Credentials are stored globally but are only accessible by the current user
Attachment files are processed locally and never stored permanently by the server

Troubleshooting

Batch Operation Failures
- If batch operations fail, they automatically retry individual items
- Check the detailed error messages for specific failures
- Consider reducing the batch size if you encounter rate limiting
Attachment Issues
- File Not Found: Ensure attachment file paths are correct and accessible
- Permission Errors: Check that the server has read access to attachment files
- Size Limits: Gmail has a 25MB attachment size limit per email
- Download Failures: Verify you have write permissions to the download directory

Testing

Configure .mcp.json with this:

{
  "mcpServers": {
    "GmailMCP": {
      "type": "stdio",
      "command": "node",
      "args": [
        "dist/index.js"
      ],
      "env": {
        "GMAIL_ACCESS_TOKEN": "..."
      }
    }
  }
}

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

Gmail MCP Server

Features

Available Tools

1. Send Email (send_email)

2. Draft Email (draft_email)

3. Read Email (read_email)

4. Download Attachment (download_attachment)

5. Search Emails (search_emails)

6. Modify Email (modify_email)

7. Delete Email (delete_email)

8. List Email Labels (list_email_labels)

9. Create Label (create_label)

10. Update Label (update_label)

11. Delete Label (delete_label)

12. Get or Create Label (get_or_create_label)

13. Batch Modify Emails (batch_modify_emails)

14. Batch Delete Emails (batch_delete_emails)