AI Native Mailtrap Integration
- Supports both Mailtrap MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Mailtrap data
Mailtrap MCP server for AI agents and assistants
Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Mailtrap MCP or direct API to send test emails, manage inboxes, track delivery, and organize transactional messages through natural language.
Api KeyApi Key
Mailtrap is an email delivery platform for safe email testing and transactional email sending. It helps you catch bugs and verify email flows without spamming real inboxes.
49 Tools
Try Mailtrap now
Type what you want done — sign in and watch it run live in the Tool Router playground.
TOOL ROUTER PLAYGROUND
Mailtrap
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TOOLS
Supported Tools
Every Mailtrap action and event your agent gets out of the box.
SETUP GUIDE
Connect Mailtrap MCP Tool with your Agent
1
Install Composio
typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcpInstall the Composio SDK for Python or TypeScript
2
Initialize Client and Create Tool Router Session
typescript
import { Composio } from '@composio/core';
const composio = new Composio({ apiKey: 'your-api-key' });
const session = await composio.create('your-user-id');
console.log(`Tool Router session created: ${session.mcp.url}`);Import and initialize the Composio client, then create a Tool Router session for Mailtrap
3
Connect to AI Agent
typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText } from 'ai';
const client = await createMCPClient({
transport: {
type: 'http',
url: session.mcp.url,
headers: {
'x-api-key': 'your-composio-api-key',
},
},
});
const tools = await client.tools();
const { text } = await generateText({
model: openai('gpt-4o'),
tools,
messages: [{
role: 'user',
content: 'Send a test email to marketing team using Mailtrap'
}],
maxSteps: 5,
});
console.log(`Agent: ${text}`);Use the MCP server with your AI agent (Anthropic Claude or Mastra)
SETUP GUIDE
Connect Mailtrap API Tool with your Agent
1
Install Composio
typescript
npm install @composio/openaiInstall the Composio SDK
2
Initialize Composio and Create Tool Router Session
typescript
import OpenAI from 'openai';
import { Composio } from '@composio/core';
import { OpenAIResponsesProvider } from '@composio/openai';
const composio = new Composio({
provider: new OpenAIResponsesProvider(),
});
const openai = new OpenAI({});
const session = await composio.create('your-user-id');Import and initialize Composio client, then create a Tool Router session
3
Execute Mailtrap Tools via Tool Router with Your Agent
typescript
const tools = session.tools;
const response = await openai.responses.create({
model: 'gpt-4.1',
tools: tools,
input: [{
role: 'user',
content: 'Send a test email to marketing team using Mailtrap'
}],
});
const result = await composio.provider.handleToolCalls(
'your-user-id',
response.output
);
console.log(result);Get tools from Tool Router session and execute Mailtrap actions with your Agent
Why Use Composio?
Managed Auth
- Built-in OAuth handling with automatic token refresh and rotation
- Central place to manage, scope, and revoke Mailtrap access
- Per user and per environment credentials instead of hard-coded keys
Agent Optimized Design
- Tools are tuned using real error and success rates to improve reliability over time
- Comprehensive execution logs so you always know what ran, when, and on whose behalf
Enterprise Grade Security
- Fine-grained RBAC so you control which agents and users can access Mailtrap
- Scoped, least privilege access to Mailtrap resources
- Full audit trail of agent actions to support review and compliance
FRAMEWORKS
Use Mailtrap with any AI Agent Framework
Choose a Framework you want to connect Mailtrap with
Claude Code
Use Mailtrap MCP with Claude Code
Cursor
Use Mailtrap MCP with Cursor
ChatGPT
Use Mailtrap MCP with ChatGPT
Claude Cowork
Use Mailtrap MCP with Claude Cowork
Antigravity
Use Mailtrap MCP with Antigravity
OpenAI Agents SDK
Use Mailtrap MCP with OpenAI Agents SDK
Claude Agents SDK
Use Mailtrap MCP with Claude Agents SDK
Codex
Use Mailtrap MCP with Codex
Grok Build
Use Mailtrap MCP with Grok Build
VS Code
Use Mailtrap MCP with VS Code
OpenCode
Use Mailtrap MCP with OpenCode
OpenClaw
Use Mailtrap MCP with OpenClaw
Hermes
Use Mailtrap MCP with Hermes
Atomic Agent
Use Mailtrap MCP with Atomic Agent
Google ADK
Use Mailtrap MCP with Google ADK
Langchain
Use Mailtrap MCP with Langchain
AI SDK
Use Mailtrap MCP with AI SDK
Mastra AI
Use Mailtrap MCP with Mastra AI
LlamaIndex
Use Mailtrap MCP with LlamaIndex
CrewAI
Use Mailtrap MCP with CrewAI
Pydantic AI
Use Mailtrap MCP with Pydantic AI
Autogen
Use Mailtrap MCP with Autogen
Rolling this out across your team?
Give your team centralized access control across every framework with Composio’s MCP Gateway.
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FAQ
Frequently asked questions
Yes, Mailtrap requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.
Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.
Yes. Composio is SOC 2 Type II compliant and is built to keep your Mailtrap connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.
Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.
Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.
Create the key in your Mailtrap account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Mailtrap actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Mailtrap at any time.
When you connect a Mailtrap account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Mailtrap as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.
Whatever the credentials you connect allow inside Mailtrap. If Mailtrap lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside Mailtrap at any time.
Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each Mailtrap connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.
The connection stops working the moment Mailtrap rejects the old key. Create a new key in Mailtrap and reconnect the account from the Composio dashboard or by asking your agent to reconnect Mailtrap. Nothing else changes.
Composio's free plan includes 100,000 tool calls per month with no credit card, which covers most personal Mailtrap use. Paid plans add higher limits and team features. Your Mailtrap plan and its API limits still apply as usual.
Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple Mailtrap accounts).
With Composio, you connect Mailtrap once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.
Start with Mailtrap.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Mailtrap tool your agent needs.Free to start.
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