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Gmail AutoAuth MCP Server

★ 1,200

from GongRzhe

An MCP server for integrating Gmail with auto-authentication support.

🔥🔥🔥🔥✓ VerifiedFreeAdvanced setup
#email#automation#payments#documents#cloud#devops#git#security

Gmail AutoAuth MCP Server

A Model Context Protocol (MCP) server for Gmail integration in Claude Desktop with auto authentication support. 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

  • Simple OAuth2 authentication flow with auto browser launch

  • 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:

Copy & paste — that's it
{
 "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:

Copy & paste — that's it
{
 "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:

Copy & paste — that's it
{
 "to": ["[email protected]"],
 "subject": "Meeting Tomorrow",
 "mimeType": "text/html",
 "body": " 

# Meeting Reminder
 Just a reminder about our meeting tomorrow** at 10 AM.
 Best regards
 "
}

Multipart Email Example (HTML + Plain Text):

Copy & paste — that's it
{
 "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": " **

# Meeting Reminder
 Just a reminder about our meeting tomorrow** at 10 AM.
 Best regards
 "
}

2. Draft Email (draft_email)

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

Copy & paste — that's it
{
 "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.

Copy & paste — that's it
{
 "messageId": "182ab45cd67ef"
}

Enhanced Response includes attachment details:

Copy & paste — that's it
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.

Copy & paste — that's it
{
 "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.

Copy & paste — that's it
{
 "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.).

Copy & paste — that's it
{
 "messageId": "182ab45cd67ef",
 "addLabelIds": ["IMPORTANT"],
 "removeLabelIds": ["INBOX"]
}

7. Delete Email (delete_email)

Permanently deletes an email.

Copy & paste — that's it
{
 "messageId": "182ab45cd67ef"
}

8. List Email Labels (list_email_labels)

Retrieves all available Gmail labels.

Copy & paste — that's it
{}

9. Create Label (create_label)

Creates a new Gmail label.

Copy & paste — that's it
{
 "name": "Important Projects",
 "messageListVisibility": "show",
 "labelListVisibility": "labelShow"
}

10. Update Label (update_label)

Updates an existing Gmail label.

Copy & paste — that's it
{
 "id": "Label_1234567890",
 "name": "Urgent Projects",
 "messageListVisibility": "show",
 "labelListVisibility": "labelShow"
}

11. Delete Label (delete_label)

Deletes a Gmail label.

Copy & paste — that's it
{
 "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.

Copy & paste — that's it
{
 "name": "Project XYZ",
 "messageListVisibility": "show",
 "labelListVisibility": "labelShow"
}

13. Batch Modify Emails (batch_modify_emails)

Modifies labels for multiple emails in efficient batches.

Copy & paste — that's it
{
 "messageIds": ["182ab45cd67ef", "182ab45cd67eg", "182ab45cd67eh"],
 "addLabelIds": ["IMPORTANT"],
 "removeLabelIds": ["INBOX"],
 "batchSize": 50
}

14. Batch Delete Emails (batch_delete_emails)

Permanently deletes multiple emails in efficient batches.

Copy & paste — that's it
{
 "messageIds": ["182ab45cd67ef", "182ab45cd67eg", "182ab45cd67eh"],
 "batchSize": 50
}

14. Create Filter (create_filter)

Creates a new Gmail filter with custom criteria and actions.

Copy & paste — that's it
{
 "criteria": {
 "from": "[email protected]",
 "hasAttachment": false
 },
 "action": {
 "addLabelIds": ["Label_Newsletter"],
 "removeLabelIds": ["INBOX"]
 }
}

15. List Filters (list_filters)

Retrieves all Gmail filters.

Copy & paste — that's it
{}

16. Get Filter (get_filter)

Gets details of a specific Gmail filter.

Copy & paste — that's it
{
 "filterId": "ANe1Bmj1234567890"
}

17. Delete Filter (delete_filter)

Deletes a Gmail filter.

Copy & paste — that's it
{
 "filterId": "ANe1Bmj1234567890"
}

18. Create Filter from Template (create_filter_from_template)

Creates a filter using pre-defined templates for common scenarios.

Copy & paste — that's it
{
 "template": "fromSender",
 "parameters": {
 "senderEmail": "[email protected]",
 "labelIds": ["Label_GitHub"],
 "archive": true
 }
}

Filter Management Features

Filter Criteria

You can create filters based on various criteria:

Criteria Example Description from " [email protected] " Emails from a specific sender to " [email protected] " Emails sent to a specific recipient subject "Meeting" Emails with specific text in subject query "has:attachment" Gmail search query syntax negatedQuery "spam" Text that must NOT be present hasAttachment true Emails with attachments size 10485760 Email size in bytes sizeComparison "larger" Size comparison (larger, smaller)

Filter Actions

Filters can perform the following actions:

Action Example Description addLabelIds ["IMPORTANT", "Label_Work"] Add labels to matching emails removeLabelIds ["INBOX", "UNREAD"] Remove labels from matching emails forward " [email protected] " Forward emails to another address

Filter Templates

The server includes pre-built templates for common filtering scenarios:

1. From Sender Template (fromSender)

Filters emails from a specific sender and optionally archives them.

Copy & paste — that's it
{
 "template": "fromSender",
 "parameters": {
 "senderEmail": "[email protected]",
 "labelIds": ["Label_Newsletter"],
 "archive": true
 }
}

2. Subject Filter Template (withSubject)

Filters emails with specific subject text and optionally marks as read.

Copy & paste — that's it
{
 "template": "withSubject",
 "parameters": {
 "subjectText": "[URGENT]",
 "labelIds": ["Label_Urgent"],
 "markAsRead": false
 }
}

3. Attachment Filter Template (withAttachments)

Filters all emails with attachments.

Copy & paste — that's it
{
 "template": "withAttachments",
 "parameters": {
 "labelIds": ["Label_Attachments"]
 }
}

4. Large Email Template (largeEmails)

Filters emails larger than a specified size.

Copy & paste — that's it
{
 "template": "largeEmails",
 "parameters": {
 "sizeInBytes": 10485760,
 "labelIds": ["Label_Large"]
 }
}

5. Content Filter Template (containingText)

Filters emails containing specific text and optionally marks as important.

Copy & paste — that's it
{
 "template": "containingText",
 "parameters": {
 "searchText": "invoice",
 "labelIds": ["Label_Finance"],
 "markImportant": true
 }
}

6. Mailing List Template (mailingList)

Filters mailing list emails and optionally archives them.

Copy & paste — that's it
{
 "template": "mailingList",
 "parameters": {
 "listIdentifier": "dev-team",
 "labelIds": ["Label_DevTeam"],
 "archive": true
 }
}

Common Filter Examples

Here are some practical filter examples:

Auto-organize newsletters:

Copy & paste — that's it
{
 "criteria": {
 "from": "[email protected]"
 },
 "action": {
 "addLabelIds": ["Label_Newsletter"],
 "removeLabelIds": ["INBOX"]
 }
}

Handle promotional emails:

Copy & paste — that's it
{
 "criteria": {
 "query": "unsubscribe OR promotional"
 },
 "action": {
 "addLabelIds": ["Label_Promotions"],
 "removeLabelIds": ["INBOX", "UNREAD"]
 }
}

Priority emails from boss:

Copy & paste — that's it
{
 "criteria": {
 "from": "[email protected]"
 },
 "action": {
 "addLabelIds": ["IMPORTANT", "Label_Boss"]
 }
}

Large attachments:

Copy & paste — that's it
{
 "criteria": {
 "size": 10485760,
 "sizeComparison": "larger",
 "hasAttachment": true
 },
 "action": {
 "addLabelIds": ["Label_LargeFiles"]
 }
}

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

  • OAuth credentials are stored securely in your local environment (~/.gmail-mcp/)

  • 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

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT

Support

If you encounter any issues or have questions, please file an issue on the GitHub repository.