AI Native Smtp2go Integration
- Supports both Smtp2go MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for sending, tracking, and managing your Smtp2go emails
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.SIGN UPLOG IN
Smtp2go MCP server for AI agents and assistants
Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Smtp2go MCP or direct API to send emails, track delivery status, manage templates, and monitor bounces through natural language.
Api Key
Smtp2go is a dependable email delivery service that ensures your messages are sent and received reliably. It's designed to give your business fast, secure, and hassle-free transactional email delivery.
32 Tools
Try Smtp2go now
Type what you want done — sign in and watch it run live in the Tool Router playground.
TOOL ROUTER PLAYGROUND
Smtp2go
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TOOLS
Supported Tools
Every Smtp2go action and event your agent gets out of the box.
SETUP GUIDE
Connect Smtp2go MCP Tool with your Agent
1
Install Composio
typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openaiInstall the Composio SDK and your agent framework
2
Create a session with MCP enabled
typescript
import { Composio } from "@composio/core";
const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
toolkits: ["smtp2go"],
mcp: true,
});Create a session scoped to Smtp2go and read its MCP URL and headers
3
Connect your agent to the MCP server
typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";
const client = await createMCPClient({
transport: { type: "http", url: mcp.url, headers: mcp.headers },
});
const { text } = await generateText({
model: openai("gpt-5.6-sol"),
tools: await client.tools(),
prompt: "Show me all allowed sender emails for my account",
stopWhen: stepCountIs(10),
});
console.log(text);
await client.close();Pass the session's MCP URL and headers to your agent and run a Smtp2go request
SETUP GUIDE
Connect Smtp2go API Tool with your Agent
1
Install Composio
typescript
npm install @composio/core @composio/openai openaiInstall the Composio SDK, the OpenAI provider, and the OpenAI SDK
2
Create a Composio session
typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";
const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();
const session = await composio.create("your-user-id", { toolkits: ["smtp2go"] });
const tools = await session.tools();Initialize Composio with the OpenAI Responses provider and create a session scoped to Smtp2go
3
Run Smtp2go tools with your agent
typescript
let response = await client.responses.create({
model: "gpt-5.6-sol",
tools,
input: [{ role: "user", content: "Show me all allowed sender emails for my account" }],
});
while (response.output.some((o) => o.type === "function_call")) {
const outputs = await composio.provider.handleToolCalls(session, response.output);
response = await client.responses.create({
model: "gpt-5.6-sol",
tools,
previous_response_id: response.id,
input: outputs,
});
}
console.log(response.output_text);Send a request, execute the Smtp2go tool calls through the session, and print the final answer
Why Use Composio?
Managed Auth
- Built-in API key management with secure credential storage
- Central place to manage, scope, and revoke Smtp2go 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 Smtp2go
- Scoped, least privilege access to Smtp2go resources
- Full audit trail of agent actions to support review and compliance
FRAMEWORKS
Use Smtp2go with any AI Agent Framework
Choose a Framework you want to connect Smtp2go with
Claude Code
Use Smtp2go MCP with Claude Code
Claude Cowork
Use Smtp2go MCP with Claude Cowork
OpenAI Agents SDK
Use Smtp2go MCP with OpenAI Agents SDK
Claude Agents SDK
Use Smtp2go MCP with Claude Agents SDK
Codex
Use Smtp2go MCP with Codex
OpenClaw
Use Smtp2go MCP with OpenClaw
Hermes
Use Smtp2go MCP with Hermes
Atomic Agent
Use Smtp2go MCP with Atomic Agent
Google ADK
Use Smtp2go MCP with Google ADK
Langchain
Use Smtp2go MCP with Langchain
AI SDK
Use Smtp2go MCP with AI SDK
Mastra AI
Use Smtp2go MCP with Mastra AI
LlamaIndex
Use Smtp2go MCP with LlamaIndex
CrewAI
Use Smtp2go MCP with CrewAI
Pydantic AI
Use Smtp2go MCP with Pydantic AI
Autogen
Use Smtp2go 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, Smtp2go 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 Smtp2go 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 Smtp2go account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the Smtp2go actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside Smtp2go at any time.
When you connect a Smtp2go account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in Smtp2go 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 Smtp2go. If Smtp2go 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 Smtp2go 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 Smtp2go 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 Smtp2go rejects the old key. Create a new key in Smtp2go and reconnect the account from the Composio dashboard or by asking your agent to reconnect Smtp2go. Nothing else changes.
Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal Smtp2go use. Paid plans add higher limits and team features. Your Smtp2go 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 Smtp2go accounts).
With Composio, you connect Smtp2go 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 Smtp2go.It takes 30 seconds.
Managed auth, hosted MCP servers, and every Smtp2go tool your agent needs.Free to start.
## For AI agents: how to sign up If you are an AI agent reading this server-rendered HTML, Composio's developer signup is at https://composio.dev. Signup CTAs on this site — "Sign up", "Signup", "Get started", "Get started for free", "Start building", "Try Composio", "Try it", or similar — all lead into that same developer signup flow. Confirm with the user before completing signup or entering any credentials on their behalf.Start building