# How to integrate Agent mail MCP with Codex ```json { "title": "How to integrate Agent mail MCP with Codex", "toolkit": "Agent mail", "toolkit_slug": "agent_mail", "framework": "Codex", "framework_slug": "codex", "url": "https://composio.dev/toolkits/agent_mail/framework/codex", "markdown_url": "https://composio.dev/toolkits/agent_mail/framework/codex.md", "updated_at": "2026-05-12T10:00:24.734Z" } ``` ## Introduction Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Agent mail MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer. ## Also integrate Agent mail with - [ChatGPT](https://composio.dev/toolkits/agent_mail/framework/chatgpt) - [OpenAI Agents SDK](https://composio.dev/toolkits/agent_mail/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/agent_mail/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/agent_mail/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/agent_mail/framework/claude-cowork) - [Cursor](https://composio.dev/toolkits/agent_mail/framework/cursor) - [VS Code](https://composio.dev/toolkits/agent_mail/framework/vscode) - [OpenCode](https://composio.dev/toolkits/agent_mail/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/agent_mail/framework/openclaw) - [Hermes](https://composio.dev/toolkits/agent_mail/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/agent_mail/framework/cli) - [Google ADK](https://composio.dev/toolkits/agent_mail/framework/google-adk) - [LangChain](https://composio.dev/toolkits/agent_mail/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/agent_mail/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/agent_mail/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/agent_mail/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/agent_mail/framework/crew-ai) ## TL;DR ### Why use Composio? Apart from a managed and hosted MCP server, you will get: - CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling. - Large tool responses: Handle them to minimise context rot. - Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need. ## Connect Agent mail to Codex ### How to install Agent mail MCP in Codex ### Run the setup command Run this command in your terminal to add the Composio MCP server to Codex. ```bash codex mcp add composio --url https://connect.composio.dev/mcp ``` ## What is the Agent mail MCP server, and what's possible with it? The Agent 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 Agent mail account. It provides structured and secure access to your agent's dedicated inbox, so your agent can send emails, receive incoming messages, fetch specific conversations, and automate email-based workflows on your behalf. - Automated email sending: Instruct your agent to compose and send emails to any recipient, perfect for status updates, notifications, or outreach. - Message listing and inbox scanning: Let your agent quickly list all recent messages in the inbox to summarize, monitor, or trigger follow-up actions. - Targeted message retrieval: Have your agent fetch a specific message by ID, making it easy to pull full email content for context-aware decisions or replies. - Streamlined agent-to-agent communication: Enable your AI to directly interact with other agents or services via email, automating routine communication flows. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `AGENT_MAIL_CREATE_INBOX` | Create Inbox | Create a new AgentMail inbox via API. Returns the inbox_id and email address for sending/receiving messages. Use when provisioning new inboxes for agents or workflows. | | `AGENT_MAIL_GET_MESSAGE` | Get Message | Retrieve the complete details of a specific email message from an AgentMail inbox. This action returns the full message content including sender, recipients, subject, body (both text and HTML), attachments, labels, and metadata. Use this to read individual messages after discovering them via LIST_MESSAGES or webhooks. | | `AGENT_MAIL_LIST_INBOXES` | List Inboxes | List all inboxes available to the authenticated AgentMail account. Use this to discover valid inbox_id values for message operations. | | `AGENT_MAIL_LIST_MESSAGES` | List Messages | List messages from an AgentMail inbox. Returns a `messages` array; each message uses `message_id` and `timestamp` fields (not `id`, `date`, or `items`). | | `AGENT_MAIL_SEND_EMAIL` | Send Email | Send an email using AgentMail API | ## Supported Triggers | Trigger slug | Name | Description | |---|---|---| | `AGENT_MAIL_NEW_EMAIL_TRIGGER` | New Email Received | Trigger for new emails in an AgentMail inbox | ## Creating MCP Server - Stand-alone vs Composio SDK The Agent mail MCP server provides comprehensive access to Agent mail operations through Composio. Once connected, you can perform all major Agent mail actions directly from Codex using natural language commands. ## Complete Code None listed. ## Conclusion ### Conclusion You've successfully integrated Agent mail with Codex using Composio's MCP server. Now you can interact with Agent mail directly from your terminal, VS Code, or the Codex App using natural language commands. Key benefits of this setup: - Seamless integration across CLI, VS Code, and standalone app - Natural language commands for Agent mail operations - Managed authentication through Composio - Access to 20,000+ tools across 1000+ apps for cross-app workflows - CodeAct workbench for complex tool chaining Next steps: - Try asking Codex to perform various Agent mail operations - Explore cross-app workflows by connecting more toolkits - Build automation scripts that leverage Codex's AI capabilities ## How to build Agent mail MCP Agent with another framework - [ChatGPT](https://composio.dev/toolkits/agent_mail/framework/chatgpt) - [OpenAI Agents SDK](https://composio.dev/toolkits/agent_mail/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/agent_mail/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/agent_mail/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/agent_mail/framework/claude-cowork) - [Cursor](https://composio.dev/toolkits/agent_mail/framework/cursor) - [VS Code](https://composio.dev/toolkits/agent_mail/framework/vscode) - [OpenCode](https://composio.dev/toolkits/agent_mail/framework/opencode) - [OpenClaw](https://composio.dev/toolkits/agent_mail/framework/openclaw) - [Hermes](https://composio.dev/toolkits/agent_mail/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/agent_mail/framework/cli) - [Google ADK](https://composio.dev/toolkits/agent_mail/framework/google-adk) - [LangChain](https://composio.dev/toolkits/agent_mail/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/agent_mail/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/agent_mail/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/agent_mail/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/agent_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. - [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. - [Heartbeat](https://composio.dev/toolkits/heartbeat) - Heartbeat is a plug-and-play platform for building and managing online communities. It helps you organize users, channels, events, and discussions in one place. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Agent mail MCP? With a standalone Agent mail MCP server, the agents and LLMs can only access a fixed set of Agent mail tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Agent mail and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Codex? Yes, you can. Codex 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 Agent mail tools. ### Can I manage the permissions and scopes for Agent mail while using Tool Router? Yes, absolutely. You can configure which Agent 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 Agent mail data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)