# How to integrate Zoho mail MCP with Pydantic AI

```json
{
  "title": "How to integrate Zoho mail MCP with Pydantic AI",
  "toolkit": "Zoho mail",
  "toolkit_slug": "zoho_mail",
  "framework": "Pydantic AI",
  "framework_slug": "pydantic-ai",
  "url": "https://composio.dev/toolkits/zoho_mail/framework/pydantic-ai",
  "markdown_url": "https://composio.dev/toolkits/zoho_mail/framework/pydantic-ai.md",
  "updated_at": "2026-05-12T10:31:31.768Z"
}
```

## Introduction

This guide walks you through connecting Zoho mail to Pydantic AI using the Composio tool router. By the end, you'll have a working Zoho mail agent that 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.
This guide will help you understand how to give your Pydantic AI agent real control over a Zoho mail account through Composio's Zoho mail MCP server.
Before we dive in, let's take a quick look at the key ideas and tools involved.

## Also integrate Zoho mail with

- [ChatGPT](https://composio.dev/toolkits/zoho_mail/framework/chatgpt)
- [OpenAI Agents SDK](https://composio.dev/toolkits/zoho_mail/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/zoho_mail/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/zoho_mail/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/zoho_mail/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/zoho_mail/framework/codex)
- [Cursor](https://composio.dev/toolkits/zoho_mail/framework/cursor)
- [VS Code](https://composio.dev/toolkits/zoho_mail/framework/vscode)
- [OpenCode](https://composio.dev/toolkits/zoho_mail/framework/opencode)
- [OpenClaw](https://composio.dev/toolkits/zoho_mail/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/zoho_mail/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/zoho_mail/framework/cli)
- [Google ADK](https://composio.dev/toolkits/zoho_mail/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/zoho_mail/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/zoho_mail/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/zoho_mail/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/zoho_mail/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/zoho_mail/framework/crew-ai)

## TL;DR

Here's what you'll learn:
- How to set up your Composio API key and User ID
- How to create a Composio Tool Router session for Zoho mail
- How to attach an MCP Server to a Pydantic AI agent
- How to stream responses and maintain chat history
- How to build a simple REPL-style chat interface to test your Zoho mail workflows

## What is Pydantic AI?

Pydantic AI is a Python framework for building AI agents with strong typing and validation. It leverages Pydantic's data validation capabilities to create robust, type-safe AI applications.
Key features include:
- Type Safety: Built on Pydantic for automatic data validation
- MCP Support: Native support for Model Context Protocol servers
- Streaming: Built-in support for streaming responses
- Async First: Designed for async/await patterns

## What is the Zoho mail MCP server, and what's possible with it?

The Zoho mail MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Zoho mail account. It provides structured and secure access to your mailbox, so your agent can perform actions like searching emails, sending messages, managing folders, organizing conversations, and handling attachments on your behalf.
- Smart email search and filtering: Ask your agent to find emails based on sender, subject, keywords, or date ranges for quick information retrieval.
- Automated composing and sending: Let your agent draft and send new emails, reply to existing threads, or create message templates to streamline communication.
- Folder and label organization: Have your agent organize your inbox by moving messages to folders, applying tags, or archiving threads for a clutter-free workspace.
- Attachment management: Retrieve, download, or send attachments through your agent—making file sharing and access seamless within your email workflow.
- Bulk message actions: Instruct your agent to mark emails as read or unread, star important messages, or clean up your inbox by deleting or archiving in bulk.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `ZOHO_MAIL_ACCOUNTS_LIST_ACCOUNTS` | List Zoho Mail Accounts | Retrieves all Zoho Mail accounts associated with the authenticated user. Returns account details including accountId (required for other mail operations), email addresses, storage information, account status, user preferences, and security settings. Use this action first to get the accountId needed for subsequent mailbox, message, folder, and email operations. The accountId is a unique identifier for each mail account. Typical workflow: List accounts → Get accountId → Use accountId in other mail operations. |
| `ZOHO_MAIL_DOMAIN_OPERATIONS` | Domain Operations | Tool to perform domain operations like verify, set primary domain, hosting, aliases, MX/SPF checks, DKIM management, and notifications. Use after creating or retrieving a domain. |
| `ZOHO_MAIL_GET_ALL_BOOKMARKS` | Get All Bookmarks | Tool to retrieve all personal bookmarks from a Zoho Mail account. Use when you need to fetch saved bookmarks/links with support for pagination and field filtering. |
| `ZOHO_MAIL_GROUPS_DELETE_GROUP_BULK` | Delete Groups in Bulk | Delete multiple groups in a single API call. This action permanently removes the specified groups from your Zoho Mail organization. Use this when you need to: - Remove multiple obsolete or unused groups at once - Clean up groups after organizational restructuring - Batch delete groups for administrative purposes Note: Deleted groups cannot be recovered. Ensure you have the correct group IDs before deletion. |
| `ZOHO_MAIL_GROUPS_DELETE_GROUP_BY_ZGID` | Delete Group | Tool to delete a specific mail group by its zgid. Use when you need to remove a group from your organization after confirming the IDs. |
| `ZOHO_MAIL_MESSAGES_CREATE_DRAFT` | Create Email Draft | Tool to create and save an email draft in Zoho Mail without sending it. Use when composing emails that need to be saved for later editing or sending. |
| `ZOHO_MAIL_MESSAGES_GET_MESSAGE_CONTENT` | Get Message Content | Tool to retrieve the full content/body of a specific Zoho Mail email. Use when you need to fetch the complete email content after listing or searching messages, as list/search endpoints typically return only metadata/summary. |
| `ZOHO_MAIL_MESSAGES_LIST_EMAILS` | List Emails | Tool to retrieve a list of emails from a Zoho Mail account folder. Use when you need to fetch emails from inbox or specific folder, with support for filtering by read status, attachments, flags, and pagination. |
| `ZOHO_MAIL_MESSAGES_REPLY_TO_EMAIL` | Reply to Email | Tool to reply to an existing email via Zoho Mail API. Use when you need to send a reply to a received email message, maintaining email threading. |
| `ZOHO_MAIL_MESSAGES_SEND_EMAIL` | Send Email | Tool to send an email via Zoho Mail API. Use when you need to send emails immediately to recipients. |
| `ZOHO_MAIL_ORGANIZATION_GET_USER_STORAGE_DETAILS` | Get Organization User Storage Details | Tool to retrieve storage details for a specific user in the organization. Use when you need to know a user’s total and used storage quotas. |
| `ZOHO_MAIL_ORGANIZATION_UPDATE_SPAM_PROCESS_TYPE` | Update Organization Spam Process Type | Tool to update organization spam processing type. Use when changing the spam filtering strategy for an organization. |
| `ZOHO_MAIL_ORGANIZATION_UPDATE_USER_STORAGE` | Update User Storage | Updates a user's storage allocation within a Zoho Mail organization. Can modify either base storage plan or extra storage add-ons. Use this when you need to: - Change a user's base storage plan (e.g., from basic to mailPremium) - Add or modify extra storage add-ons for a user Prerequisites: You must have valid zoid (organization ID) and zuid (user ID) before calling this action. |
| `ZOHO_MAIL_SEARCH_MESSAGES` | Search Messages | Tool to search emails in a Zoho Mail account using Zoho's searchKey syntax. Use when you need to find specific emails by sender, subject, keywords, status (e.g., unread), attachments, or flags. Returns messageId and folderId needed to fetch full message content. |
| `ZOHO_MAIL_UPDATE_GROUP_SETTINGS` | Update Group Settings | Tool to update group settings. Use after group creation to adjust general or text settings. |

## Supported Triggers

None listed.

## Creating MCP Server - Stand-alone vs Composio SDK

The Zoho mail MCP server is an implementation of the Model Context Protocol that connects your AI agent to Zoho mail. It provides structured and secure access so your agent can perform Zoho mail operations on your behalf through a secure, permission-based interface.
With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster.

## Step-by-step Guide

### 1. Prerequisites

Before starting, make sure you have:
- Python 3.9 or higher
- A Composio account with an active API key
- Basic familiarity with Python and async programming

### 1. Getting API Keys for OpenAI and Composio

OpenAI API Key
- Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. You'll need credits to use the models, or you can connect to another model provider.
- Keep the API key safe.
Composio API Key
- Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs).
- Navigate to your API settings and generate a new API key.
- Store this key securely as you'll need it for authentication.

### 2. Install dependencies

Install the required libraries.
What's happening:
- composio connects your agent to external SaaS tools like Zoho mail
- pydantic-ai lets you create structured AI agents with tool support
- python-dotenv loads your environment variables securely from a .env file
```bash
pip install composio pydantic-ai python-dotenv
```

### 3. Set up environment variables

Create a .env file in your project root.
What's happening:
- COMPOSIO_API_KEY authenticates your agent to Composio's API
- USER_ID associates your session with your account for secure tool access
- OPENAI_API_KEY to access OpenAI LLMs
```bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
OPENAI_API_KEY=your_openai_api_key
```

### 4. Import dependencies

What's happening:
- We load environment variables and import required modules
- Composio manages connections to Zoho mail
- MCPServerStreamableHTTP connects to the Zoho mail MCP server endpoint
- Agent from Pydantic AI lets you define and run the AI assistant
```python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerStreamableHTTP

load_dotenv()
```

### 5. Create a Tool Router Session

What's happening:
- We're creating a Tool Router session that gives your agent access to Zoho mail tools
- The create method takes the user ID and specifies which toolkits should be available
- The returned session.mcp.url is the MCP server URL that your agent will use
```python
async def main():
    api_key = os.getenv("COMPOSIO_API_KEY")
    user_id = os.getenv("USER_ID")
    if not api_key or not user_id:
        raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment")

    # Create a Composio Tool Router session for Zoho mail
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["zoho_mail"],
    )
    url = session.mcp.url
    if not url:
        raise ValueError("Composio session did not return an MCP URL")
```

### 6. Initialize the Pydantic AI Agent

What's happening:
- The MCP client connects to the Zoho mail endpoint
- The agent uses GPT-5 to interpret user commands and perform Zoho mail operations
- The instructions field defines the agent's role and behavior
```python
# Attach the MCP server to a Pydantic AI Agent
zoho_mail_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[zoho_mail_mcp],
    instructions=(
        "You are a Zoho mail assistant. Use Zoho mail tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)
```

### 7. Build the chat interface

What's happening:
- The agent reads input from the terminal and streams its response
- Zoho mail API calls happen automatically under the hood
- The model keeps conversation history to maintain context across turns
```python
# Simple REPL with message history
history = []
print("Chat started! Type 'exit' or 'quit' to end.\n")
print("Try asking the agent to help you with Zoho mail.\n")

while True:
    user_input = input("You: ").strip()
    if user_input.lower() in {"exit", "quit", "bye"}:
        print("\nGoodbye!")
        break
    if not user_input:
        continue

    print("\nAgent is thinking...\n", flush=True)

    async with agent.run_stream(user_input, message_history=history) as stream_result:
        collected_text = ""
        async for chunk in stream_result.stream_output():
            text_piece = None
            if isinstance(chunk, str):
                text_piece = chunk
            elif hasattr(chunk, "delta") and isinstance(chunk.delta, str):
                text_piece = chunk.delta
            elif hasattr(chunk, "text"):
                text_piece = chunk.text
            if text_piece:
                collected_text += text_piece
        result = stream_result

    print(f"Agent: {collected_text}\n")
    history = result.all_messages()
```

### 8. Run the application

What's happening:
- The asyncio loop launches the agent and keeps it running until you exit
```python
if __name__ == "__main__":
    asyncio.run(main())
```

## Complete Code

```python
import asyncio
import os
from dotenv import load_dotenv
from composio import Composio
from pydantic_ai import Agent
from pydantic_ai.mcp import MCPServerStreamableHTTP

load_dotenv()

async def main():
    api_key = os.getenv("COMPOSIO_API_KEY")
    user_id = os.getenv("USER_ID")
    if not api_key or not user_id:
        raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment")

    # Create a Composio Tool Router session for Zoho mail
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["zoho_mail"],
    )
    url = session.mcp.url
    if not url:
        raise ValueError("Composio session did not return an MCP URL")

    # Attach the MCP server to a Pydantic AI Agent
    zoho_mail_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[zoho_mail_mcp],
        instructions=(
            "You are a Zoho mail assistant. Use Zoho mail tools to help users "
            "with their requests. Ask clarifying questions when needed."
        ),
    )

    # Simple REPL with message history
    history = []
    print("Chat started! Type 'exit' or 'quit' to end.\n")
    print("Try asking the agent to help you with Zoho mail.\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "bye"}:
            print("\nGoodbye!")
            break
        if not user_input:
            continue

        print("\nAgent is thinking...\n", flush=True)

        async with agent.run_stream(user_input, message_history=history) as stream_result:
            collected_text = ""
            async for chunk in stream_result.stream_output():
                text_piece = None
                if isinstance(chunk, str):
                    text_piece = chunk
                elif hasattr(chunk, "delta") and isinstance(chunk.delta, str):
                    text_piece = chunk.delta
                elif hasattr(chunk, "text"):
                    text_piece = chunk.text
                if text_piece:
                    collected_text += text_piece
            result = stream_result

        print(f"Agent: {collected_text}\n")
        history = result.all_messages()

if __name__ == "__main__":
    asyncio.run(main())
```

## Conclusion

You've built a Pydantic AI agent that can interact with Zoho mail through Composio's Tool Router. With this setup, your agent can perform real Zoho mail actions through natural language.
You can extend this further by:
- Adding other toolkits like Gmail, HubSpot, or Salesforce
- Building a web-based chat interface around this agent
- Using multiple MCP endpoints to enable cross-app workflows (for example, Gmail + Zoho mail for workflow automation)
This architecture makes your AI agent "agent-native", able to securely use APIs in a unified, composable way without custom integrations.

## How to build Zoho mail MCP Agent with another framework

- [ChatGPT](https://composio.dev/toolkits/zoho_mail/framework/chatgpt)
- [OpenAI Agents SDK](https://composio.dev/toolkits/zoho_mail/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/zoho_mail/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/zoho_mail/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/zoho_mail/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/zoho_mail/framework/codex)
- [Cursor](https://composio.dev/toolkits/zoho_mail/framework/cursor)
- [VS Code](https://composio.dev/toolkits/zoho_mail/framework/vscode)
- [OpenCode](https://composio.dev/toolkits/zoho_mail/framework/opencode)
- [OpenClaw](https://composio.dev/toolkits/zoho_mail/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/zoho_mail/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/zoho_mail/framework/cli)
- [Google ADK](https://composio.dev/toolkits/zoho_mail/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/zoho_mail/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/zoho_mail/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/zoho_mail/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/zoho_mail/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/zoho_mail/framework/crew-ai)

## Related Toolkits

- [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable.
- [Outlook](https://composio.dev/toolkits/outlook) - Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management.
- [Slack](https://composio.dev/toolkits/slack) - Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place.
- [Gong](https://composio.dev/toolkits/gong) - Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action.
- [Microsoft teams](https://composio.dev/toolkits/microsoft_teams) - Microsoft Teams is a collaboration platform that combines chat, meetings, and file sharing within Microsoft 365. It keeps distributed teams connected and productive through seamless virtual communication.
- [Slackbot](https://composio.dev/toolkits/slackbot) - Slackbot is a conversational automation tool for Slack that handles reminders, notifications, and automated responses. It boosts team productivity by streamlining onboarding, answering FAQs, and managing timely alerts—all right inside Slack.
- [2chat](https://composio.dev/toolkits/_2chat) - 2chat is an API platform for WhatsApp and multichannel text messaging. It streamlines chat automation, group management, and real-time messaging for developers.
- [Agent mail](https://composio.dev/toolkits/agent_mail) - Agent mail provides AI agents with dedicated email inboxes for sending, receiving, and managing emails. It empowers agents to communicate autonomously with people, services, and other agents—no human intervention needed.
- [Basecamp](https://composio.dev/toolkits/basecamp) - Basecamp is a project management and team collaboration tool by 37signals. It helps teams organize tasks, share files, and communicate efficiently in one place.
- [Chatwork](https://composio.dev/toolkits/chatwork) - Chatwork is a team communication platform with group chats, file sharing, and task management. It helps businesses boost collaboration and streamline productivity.
- [Clickmeeting](https://composio.dev/toolkits/clickmeeting) - ClickMeeting is a cloud-based platform for running online meetings and webinars. It helps businesses and individuals host, manage, and engage virtual audiences with ease.
- [Confluence](https://composio.dev/toolkits/confluence) - Confluence is Atlassian's team collaboration and knowledge management platform. It helps your team organize, share, and update documents and project content in one secure workspace.
- [Dailybot](https://composio.dev/toolkits/dailybot) - DailyBot streamlines team collaboration with chat-based standups, reminders, and polls. It keeps work flowing smoothly in your favorite messaging platforms.
- [Dialmycalls](https://composio.dev/toolkits/dialmycalls) - Dialmycalls is a mass notification service for sending voice and text messages to contacts. It helps teams and organizations quickly broadcast urgent alerts and updates.
- [Dialpad](https://composio.dev/toolkits/dialpad) - Dialpad is a cloud-based business phone and contact center system for teams. It unifies voice, video, messaging, and meetings across your devices.
- [Discord](https://composio.dev/toolkits/discord) - Discord is a real-time messaging and VoIP platform for communities and teams. It lets users chat, share media, and collaborate across public and private channels.
- [Discordbot](https://composio.dev/toolkits/discordbot) - Discordbot is an automation tool for Discord servers that handles moderation, messaging, and user engagement. It helps communities run smoothly by automating routine and complex tasks.
- [Echtpost](https://composio.dev/toolkits/echtpost) - Echtpost is a secure digital communication platform for encrypted document and message exchange. It ensures confidential data stays private and protected during transmission.
- [Egnyte](https://composio.dev/toolkits/egnyte) - Egnyte is a cloud-based platform for secure file sharing, storage, and governance. It helps teams collaborate efficiently while maintaining data compliance and security.
- [Google Meet](https://composio.dev/toolkits/googlemeet) - Google Meet is a secure video conferencing platform for virtual meetings, chat, and screen sharing. It helps teams connect, collaborate, and communicate seamlessly from anywhere.

## Frequently Asked Questions

### What are the differences in Tool Router MCP and Zoho mail MCP?

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.

### Can I use Tool Router MCP with Pydantic AI?

Yes, you can. Pydantic AI 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.

### Can I manage the permissions and scopes for Zoho mail while using Tool Router?

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.

### How safe is my data with Composio Tool Router?

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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