# How to integrate Zoho mail MCP with Atomic Agent

```json
{
  "title": "How to integrate Zoho mail MCP with Atomic Agent",
  "toolkit": "Zoho mail",
  "toolkit_slug": "zoho_mail",
  "framework": "Atomic Agent",
  "framework_slug": "atomic-agent",
  "url": "https://composio.dev/toolkits/zoho_mail/framework/atomic-agent",
  "markdown_url": "https://composio.dev/toolkits/zoho_mail/framework/atomic-agent.md",
  "updated_at": "2026-08-14T10:04:37.725Z"
}
```

## Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Zoho mail.
This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Zoho mail account. See the [Atomic Agent documentation](https://atomicagent.io/docs/?cta_placement=atomic-agent-docs) for installation instructions.

## Also integrate Zoho mail with

- [ChatGPT](https://composio.dev/toolkits/zoho_mail/framework/chatgpt)
- [Antigravity](https://composio.dev/toolkits/zoho_mail/framework/antigravity)
- [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)
- [Grok Build](https://composio.dev/toolkits/zoho_mail/framework/grok-build)
- [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)
- [Pi](https://composio.dev/toolkits/zoho_mail/framework/pi-agent)
- [DeepSeek Harness](https://composio.dev/toolkits/zoho_mail/framework/deepseek)
- [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)
- [Pydantic AI](https://composio.dev/toolkits/zoho_mail/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/zoho_mail/framework/autogen)

## TL;DR

### How Atomic Agent connects to Zoho mail
Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.
Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

## Connect Zoho mail to Atomic Agent

### Connect Zoho mail to Atomic Agent
- Sign up or sign in to the [Composio dashboard](https://dashboard.composio.dev/?cta_placement=atomic-agent-api-key). Copy your API key.
- In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
- Ask Atomic Agent to do something in Zoho mail. It searches Composio for the right tool.
- On first use, open the sign-in link returned in the chat. Connect your Zoho mail account, then return to Atomic Agent to continue.
### Headless setup
Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

```bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY
```

## 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.

## Troubleshooting

### Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

### Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

### Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See [Composio pricing](/pricing) for the current limits that apply to your connection.

## Complete Code

None listed.

## Conclusion

### Use Zoho mail from Atomic Agent
With your account connected, ask Atomic Agent to work with Zoho mail in natural language. You can connect more apps through the same Composio integration as you need them.
Visit the [Atomic Agent website](https://atomicagent.io/?cta_placement=atomic-agent-site) or inspect the [Atomic Agent source code](https://github.com/AtomicBot-ai/atomic-agent?cta_placement=atomic-agent-repo).

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

- [ChatGPT](https://composio.dev/toolkits/zoho_mail/framework/chatgpt)
- [Antigravity](https://composio.dev/toolkits/zoho_mail/framework/antigravity)
- [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)
- [Grok Build](https://composio.dev/toolkits/zoho_mail/framework/grok-build)
- [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)
- [Pi](https://composio.dev/toolkits/zoho_mail/framework/pi-agent)
- [DeepSeek Harness](https://composio.dev/toolkits/zoho_mail/framework/deepseek)
- [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)
- [Pydantic AI](https://composio.dev/toolkits/zoho_mail/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/zoho_mail/framework/autogen)

## 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.
- [Android Texter](https://composio.dev/toolkits/android_texter) - Android Texter is an API service that connects Android phones to SMS, MMS, contacts, and device data. Use it to automate mobile messaging without building your own phone-to-API bridge.
- [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.
- [Blooio](https://composio.dev/toolkits/blooio) - Blooio is a stable v2 API platform for messaging, chats, contacts, groups, phone numbers, and account analytics. It gives teams a clean way to build reliable communication workflows without stitching together fragile custom APIs.
- [CallOnTheGo](https://composio.dev/toolkits/callonthego) - CallOnTheGo is a telephony API for managing phone numbers, caller IDs, suppression lists, audio assets, contact lists, and Voice AI campaigns. It provides programmatic control over calling infrastructure and campaign automation for scalable voice outreach.
- [Carbon Voice MCP](https://composio.dev/toolkits/carbon_voice_mcp) - Carbon Voice MCP is a voice-first collaboration platform for messages, conversations, and workflows. Use it to centralize voice communications and streamline team collaboration.
- [CardClan](https://composio.dev/toolkits/cardclan) - CardClan is a digital card platform for creating and sending personalized team cards. Use it to celebrate moments, share card links, and manage card workflows without extra coordination.
- [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.
- [Daily](https://composio.dev/toolkits/daily) - Daily is a WebRTC video and audio API platform for building rooms, meetings, recordings, live streams, transcriptions, and telephony. It gives developers reliable real-time media infrastructure without managing complex conferencing stacks.
- [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.

## 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 Atomic Agent?

Yes, you can. Atomic Agent 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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