How to integrate Zoho mail MCP with ChatGPT Work

Connect ChatGPT Work to Zoho mail MCP. Send a follow-up email to yesterday's meeting attendees, list unread emails from your manager, and more using natural language, with authentication handled for you.

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Zoho Mail is a secure and ad-free email hosting platform with collaboration features. It helps businesses communicate efficiently while maintaining privacy and administrative control.

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How to integrate Zoho mail MCP with ChatGPT Work

ChatGPT Work is an agent inside ChatGPT built for your most ambitious work. It takes action across your apps and files, stays with a project for hours, and turns a goal into finished materials like sheets, slides, and docs - not just answers.

In this guide, I will explain the easiest and most secure way to connect your Zoho mail account to ChatGPT Work via Composio Connect, so it can send a follow-up email to yesterday's meeting attendees, list unread emails from your manager, schedule a calendar event from an email through natural language commands without ever putting your account credentials at risk.

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Why use Composio over default connectors?

  • Apps with read and write access. Default connectors mostly can read your data. Composio's Zoho mail integration lets ChatGPT Work take actions like creating drafts, sending updates, labeling records, and more.
  • 1,000+ SaaS toolkits out of the box. Composio gives you instant access to a vast catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Connect any of your applications on demand through a single endpoint, rather than juggling a separate server for each app.
  • Smart, context-aware tool loading. Unlike traditional MCP servers that dump every available tool into the LLM context window, Composio searches for and loads only the tools relevant to the task at hand.
  • Cross-app automation. Chain actions across multiple apps in a single run - fetch a thread, summarize it in Notion, and post highlights to Slack without leaving the conversation.

Prerequisites

  • A ChatGPT account with access to ChatGPT Work (rolling out across Pro, Enterprise, Edu, Plus, and Business plans). We will use the ChatGPT desktop app, which is available on every plan.
  • Access to the Zoho mail workspace you want to connect.
  • Composio MCP.

Note: Composio connects through OAuth. You will be asked to sign in and approve specific permissions. Review the permission screen carefully if you are using a work account.

Step-by-step: Connect Zoho mail to ChatGPT Work

1. Open the MCP settings

In ChatGPT Work, go to Settings and open the Plugins section. Inside the Plugins page, click the MCP tab.

ChatGPT Work settings showing the Plugins page with the MCP tab selected

2. Add the server

Click Add server. In the Name field enter Composio, for Type select Streamable HTTP, and in the URL field paste the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
ChatGPT Work Add server dialog with the name Composio, type Streamable HTTP, and the Composio MCP URL

Then click Save. The Composio server now appears in your MCP plugins list.

ChatGPT Work Plugins page showing the Composio MCP server added to the list

3. Authenticate

Click Authenticate, log in via Composio, and click Allow access to authorize ChatGPT Work to use your Composio account.

Composio login and Allow access screen for ChatGPT Work MCP setup

4. Start using Composio

That is it - Composio tools are now available in ChatGPT Work. Ask it to work with your Zoho mail account and it will run the actions you authorize.

What you can do after connecting Zoho mail

  • Send a follow-up email to yesterday's meeting attendees
  • List unread emails from your manager
  • Schedule a calendar event from an email
  • Archive all newsletters received this week

Security + privacy notes (important)

  • Use least-privilege access: Only grant permissions you actually need.
  • Review OAuth permissions before approving: Make sure requested scopes match what you expect Composio and ChatGPT Work to do.
  • Keep write actions human-reviewed: For actions like sending messages, creating labels, or editing drafts, keep manual confirmation enabled.
  • Be careful with sensitive data: Avoid using this setup with highly sensitive information unless allowed by your personal, company, or client policies.
TOOLS

Supported Tools

Every Zoho mail action and event your agent gets out of the box.

List Zoho Mail Accounts

Retrieves all Zoho Mail accounts associated with the authenticated user.

Domain Operations

Tool to perform domain operations like verify, set primary domain, hosting, aliases, MX/SPF checks, DKIM management, and notifications.

Get All Bookmarks

Tool to retrieve all personal bookmarks from a Zoho Mail account.

Delete Groups in Bulk

Delete multiple groups in a single API call.

Delete Group

Tool to delete a specific mail group by its zgid.

Create Email Draft

Tool to create and save an email draft in Zoho Mail without sending it.

Get Message Content

Tool to retrieve the full content/body of a specific Zoho Mail email.

List Emails

Tool to retrieve a list of emails from a Zoho Mail account folder.

Reply to Email

Tool to reply to an existing email via Zoho Mail API.

Send Email

Tool to send an email via Zoho Mail API.

Get Organization User Storage Details

Tool to retrieve storage details for a specific user in the organization.

Update Organization Spam Process Type

Tool to update organization spam processing type.

Update User Storage

Updates a user's storage allocation within a Zoho Mail organization.

Search Messages

Tool to search emails in a Zoho Mail account using Zoho's searchKey syntax.

Update Group Settings

Tool to update group settings.

FRAMEWORKS

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Claude Cowork

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Codex

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Grok Build

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Cursor

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VS Code

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OpenCode

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Hermes

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Vercel AI SDK

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CrewAI

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Pydantic AI

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FAQ

Frequently asked questions

With a standalone Zoho mail MCP server, the agents and LLMs can only access a fixed set of Zoho mail tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Zoho mail and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. ChatGPT Work fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Zoho mail tools.

Yes, absolutely. You can configure which Zoho mail scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Zoho mail data and credentials are handled as safely as possible.

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