How to connect Gmail to Claude Code

1. 1. Enable Gmail in Metorial

   In your Metorial portal, enable the Gmail MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Gmail tools.

• Modify Message: Modify a message's labels, move it to trash, or restore it from trash.
• Manage Settings: View and manage Gmail settings including vacation responder (auto-reply), IMAP, POP, display language, mail filters, forwarding addresses, auto-forwarding status, and send-as alia…
• Manage Draft: Create, update, send, list, get, or delete email drafts.
• Manage Labels: List, create, update, get, or delete Gmail labels.
• Manage Thread: Get, list, modify labels, trash, or restore email conversation threads.
• Search Messages: Search and list email messages using Gmail query syntax.
• Get Message: Retrieve a single email message by its ID.
• Send Email: Send an email message to one or more recipients.
• Get Attachment: Download an email attachment by its ID.
• Search Google Contacts: Searches the authenticated user's Google Contacts from the People API by name, email address, phone number, or other fields.
• List Google Contacts: Lists the authenticated user's Google Contacts from the People API with pagination support.
• Get Google Contact: Retrieves detailed Google Contacts information for a People API resource name.
• Delete Messages Permanently: Immediately and permanently delete one or more Gmail messages.
• Delete Thread Permanently: Immediately and permanently delete a Gmail thread and all messages in it.
• Forward Message: Forward an existing Gmail message to new recipients while preserving its complete MIME body and attachments.
• And 3 more on the Gmail MCP server page.

• Gmail tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Gmail tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.