# Unione

```json
{
  "name": "Unione",
  "slug": "unione",
  "url": "https://composio.dev/toolkits/unione",
  "markdown_url": "https://composio.dev/toolkits/unione.md",
  "logo_url": "https://logos.composio.dev/api/unione",
  "categories": [
    "marketing & social media"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-05-06T08:32:44.085Z"
}
```

![Unione logo](https://logos.composio.dev/api/unione)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Unione MCP or direct API to send emails, fetch delivery status, manage campaigns, and organize mailing lists through natural language.

## Summary

UniOne is an email delivery service with a flexible Web API and SMTP API for transactional and marketing emails. It streamlines reliable, scalable email sending for developers and businesses.

## Categories

- marketing & social media

## Toolkit Details

- Tools: 36

## Images

- Logo: https://logos.composio.dev/api/unione

## Authentication

- **Api Key**
  - Type: `api_key`
  - Description: Api Key authentication for Unione.
  - Setup:
    - Configure Api Key credentials for Unione.
    - Use the credentials when creating an auth config in Composio.

## Suggested Prompts

- Check my current UniOne email balance
- Cancel a scheduled email by job ID
- List all sender domains and their status
- Export email events from the past week

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `UNIONE_EMAIL_BALANCE` | UniOne Email Balance | Tool to retrieve current account balance. use when you need to check your email usage and limits before sending large campaigns. |
| `UNIONE_EMAIL_CANCEL` | Cancel Scheduled Email | Tool to cancel a scheduled transactional email by its job id. use when you need to stop a pending email send before it's dispatched. |
| `UNIONE_EMAIL_DOMAIN` | UniOne Email Domain Management | Tool to manage sender domains in unione. use when you need dns records for verification, trigger verification or dkim checks, list domains, or delete a domain. |
| `UNIONE_EMAIL_EVENT_GET` | Get Email Event | Tool to retrieve details of a specific email event by its id. use when you need event information for auditing or diagnostics. |
| `UNIONE_EMAIL_EVENT_TYPES` | UniOne Email Event Types | Tool to retrieve supported email event types. use when you need a list of possible event codes for filtering or analytics. |
| `UNIONE_EMAIL_GET` | Get Email Send Job | Tool to retrieve detailed information about a specific email send job. use when you need its delivery metrics and history. |
| `UNIONE_EMAIL_LIST` | UniOne Email List (Export) | Tool to export email events within a specified time frame. it creates an asynchronous event dump which can later be downloaded and parsed using unione event dump get. |
| `UNIONE_EMAIL_LOG` | UniOne Email Event Log | Tool to initiate an asynchronous export of email events (event dump). use when you need to export transactional email events for a specified time window. |
| `UNIONE_EMAIL_PLAN` | UniOne Email Plan | Tool to retrieve current subscription plan details. use when you need to check your project and account plan limits before sending bulk emails. |
| `UNIONE_EMAIL_PRICING` | UniOne Email Pricing | Tool to retrieve current email pricing. use when you need to check per-email cost rates before sending emails. |
| `UNIONE_EMAIL_QUOTA` | UniOne Email Quota | Tool to retrieve current email sending quota. use when you need to check your remaining quota before sending emails. |
| `UNIONE_EMAIL_RESEND` | Resend Sent Email | Tool to resend a previously sent email by its job id. use when you need to trigger a resend of an email that has already been sent and you have the original job id. |
| `UNIONE_EMAIL_RESUBSCRIBE` | UniOne Email Resubscribe | Tool to resubscribe a recipient who previously unsubscribed. use when you need to restore a user's subscription status after they opt in again. |
| `UNIONE_EMAIL_RESUME` | Resume Paused Email | Tool to resume a paused transactional email by its job id. use when you need to restart a paused pending email send. |
| `UNIONE_EMAIL_SCHEDULE` | UniOne Email Schedule | Tool to schedule a transactional email up to 24 hours ahead. use when you need to send an email at a specific future time. |
| `UNIONE_EMAIL_SMTP` | UniOne Email SMTP Configuration | Tool to retrieve smtp server details and credentials. use when you need to configure your mail client or library for smtp sending. |
| `UNIONE_EMAIL_STATISTICS` | UniOne Email Statistics | Tool to retrieve email sending statistics over a specified time range. this action uses unione's event-dump aggregate api under the hood to compute daily statistics. |
| `UNIONE_EMAIL_UNSUBSCRIBE` | UniOne Email Unsubscribe | Tool to unsubscribe an email from future emails. use when you need to stop all further transactional emails. |
| `UNIONE_EMAIL_VALIDATE` | Validate Email Address | Tool to validate an email address. use when you need deliverability diagnostics after compiling your recipient list. |
| `UNIONE_EMAIL_VALIDATE_BATCH` | Batch Email Validation | Tool to validate multiple email addresses in a batch. use when you need to verify deliverability for a list of emails at once. |
| `UNIONE_EMAIL_VALIDATE_RESEND` | Resend Email Validation Results | Tool to resend results of an email validation request. use when you need to retrieve validation results again by request id. |
| `UNIONE_EMAIL_VALIDATE_RESULT` | UniOne Email Validate Result | Tool to retrieve the detailed result of an email validation request. updated behavior: uses the official single email validation endpoint to synchronously obtain full diagnostics for the provided email address. |
| `UNIONE_EMAIL_VALIDATE_RETRY` | Retry Email Validation | Tool to retry an email validation request. updated to re-run validation via the official single validation endpoint using the provided email address. |
| `UNIONE_EMAIL_VALIDATE_STATUS` | UniOne Email Validate Status | Tool to retrieve the current status of an email validation request. use when you need to poll for completion status. |
| `UNIONE_EMAIL_WEBHOOK_TYPES` | UniOne Email Webhook Types | Tool to retrieve supported email webhook event types. use when configuring your webhook callbacks. |
| `UNIONE_EVENT_DUMP_CREATE` | Create Event Dump | Tool to create an asynchronous csv event dump. use when you need to export transactional email events for a specified time window. |
| `UNIONE_EVENT_DUMP_LIST` | UniOne Event Dump List | Tool to retrieve the full list of event dumps. use when you need to view all existing event-dump tasks. |
| `UNIONE_SCHEDULE_EMAIL` | Schedule Email | Tool to schedule a transactional email up to 24 hours ahead. use when you need to send an email at a specific future time. |
| `UNIONE_SUPPRESSION_LIST` | Suppression List | Tool to return the suppression list since a given date. use when auditing bounced, unsubscribed, or blocked recipients. |
| `UNIONE_TAG_DELETE` | Delete Tag | Tool to delete a specific tag. use when you have confirmed the tag id you wish to remove. |
| `UNIONE_TAG_LIST` | UniOne Tag List | Tool to retrieve all user-defined tags. use when you need to fetch the full list of tags after authentication. |
| `UNIONE_TEMPLATE_LIST` | UniOne Template List | Tool to list email templates. use when you need to retrieve available templates for transactional emails. |
| `UNIONE_TEMPLATE_SET` | Set Template | Tool to set or update an email template. use when you need to create or modify transactional email templates before sending messages. |
| `UNIONE_UNIONE_EMAIL_VALIDATE_DELETE` | Delete Email Validation Request | Tool to delete an email validation request. use when a validation job should be canceled by its id. |
| `UNIONE_UNIONE_EVENT_DUMP_GET` | Get Event Dump | Tool to retrieve the contents of a specific event dump. use when you have the dump identifier (from event-dump/create) and need its status and download urls. |
| `UNIONE_WEBHOOK_SET` | Set Webhook | Tool to set or edit a webhook event notification handler. use when you need to configure your webhook for event callbacks. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

#### Path 1, Step 1: Install Composio

Install the Composio SDK
```python
pip install composio_openai
```

```typescript
npm install @composio/openai
```

#### Path 1, Step 2: Initialize Composio and Create Tool Router Session

Import and initialize Composio client, then create a Tool Router session
```python
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
openai = OpenAI()
session = composio.create(user_id='your-user-id')
```

```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');
```

#### Path 1, Step 3: Execute Unione Tools via Tool Router with Your Agent

Get tools from Tool Router session and execute Unione actions with your Agent
```python
tools = session.tools
response = openai.responses.create(
  model='gpt-4.1',
  tools=tools,
  input=[{
    'role': 'user',
    'content': 'Check my UniOne email account balance and plan details.'
  }]
)
result = composio.provider.handle_tool_calls(
  response=response,
  user_id='your-user-id'
)
print(result)
```

```typescript
const tools = session.tools;
const response = await openai.responses.create({
  model: 'gpt-4.1',
  tools: tools,
  input: [{
    role: 'user',
    content: 'Check my UniOne email account balance and plan details.'
  }],
});
const result = await composio.provider.handleToolCalls(
  'your-user-id',
  response.output
);
console.log(result);
```

### Path 2: MCP Server Setup

#### Path 2, Step 1: Install Composio

Install the Composio SDK and Claude Agent SDK
```python
pip install composio claude-agent-sdk
```

```typescript
npm install @composio/core ai @ai-sdk/openai @ai-sdk/mcp
```

#### Path 2, Step 2: Create Tool Router Session

Initialize the Composio client and create a Tool Router session
```python
from composio import Composio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions

composio = Composio(api_key='your-composio-api-key')
session = composio.create(user_id='your-user-id')
url = session.mcp.url
```

```typescript
import { Composio } from '@composio/core';

const composio = new Composio({ apiKey: 'your-api-key' });

console.log("Creating Tool Router session...");
const { mcp } = await composio.create('your-user-id');
console.log(`Tool Router session created: ${mcp.url}`);
```

#### Path 2, Step 3: Connect to AI Agent

Use the MCP server with your AI agent
```python
import asyncio

options = ClaudeAgentOptions(
    permission_mode='bypassPermissions',
    mcp_servers={
        'tool_router': {
            'type': 'http',
            'url': url,
            'headers': {
                'x-api-key': 'your-composio-api-key'
            }
        }
    },
    system_prompt='You are a helpful assistant with access to Unione tools.',
    max_turns=10
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query('Export email events from last week')
        async for message in client.receive_response():
            if hasattr(message, 'content'):
                for block in message.content:
                    if hasattr(block, 'text'):
                        print(block.text)

asyncio.run(main())
```

```typescript
import { openai } from '@ai-sdk/openai';
import { experimental_createMCPClient as createMCPClient } from '@ai-sdk/mcp';
import { generateText, stepCountIs } from 'ai';

const client = await createMCPClient({
  transport: {
    type: 'http',
    url: 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: 'Export email events from last week' }],
  stopWhen: stepCountIs( 5 )
});

console.log(`Agent: ${text}`);
```

## Why Use Composio?

### 1. AI Native Unione Integration

- Supports both Unione MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable tool execution
- Rich coverage for reading, writing, and querying your Unione data

### 2. Managed Auth

- Built-in API key management—no need to handle raw secrets
- Central place to manage, scope, and revoke Unione access
- Per user and per environment credentials instead of hard-coded keys

### 3. 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

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access Unione
- Scoped, least privilege access to Unione resources
- Full audit trail of agent actions to support review and compliance

## Use Unione with any AI Agent Framework

Choose a framework you want to connect Unione with:

- [OpenAI Agents SDK](https://composio.dev/toolkits/unione/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/unione/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/unione/framework/claude-code)
- [Claude Cowork](https://composio.dev/toolkits/unione/framework/claude-cowork)
- [Codex](https://composio.dev/toolkits/unione/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/unione/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/unione/framework/hermes-agent)
- [Google ADK](https://composio.dev/toolkits/unione/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/unione/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/unione/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/unione/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/unione/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/unione/framework/crew-ai)
- [Pydantic AI](https://composio.dev/toolkits/unione/framework/pydantic-ai)
- [AutoGen](https://composio.dev/toolkits/unione/framework/autogen)

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- [Cardly](https://composio.dev/toolkits/cardly) - Cardly is a platform for creating and sending personalized direct mail to customers. It helps businesses break through the digital clutter by getting real engagement via physical mailboxes.
- [ClickSend](https://composio.dev/toolkits/clicksend) - ClickSend is a cloud-based SMS and email marketing platform for businesses. It streamlines communication by enabling quick message delivery and contact management.
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- [Curated](https://composio.dev/toolkits/curated) - Curated is a platform for collecting, curating, and publishing newsletters. It streamlines content aggregation and distribution for creators and teams.
- [Customerio](https://composio.dev/toolkits/customerio) - Customer.io is a customer engagement platform for targeted messaging across email, SMS, and push. Easily automate, segment, and track communications with your audience.
- [Cutt ly](https://composio.dev/toolkits/cutt_ly) - Cutt.ly is a URL shortening service for managing and analyzing links. Streamline your workflows with quick, trackable, and branded short URLs.
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## Frequently Asked Questions

### Do I need my own developer credentials to use Unione with Composio?

Yes, Unione requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

### Can I use multiple toolkits together?

Yes! Composio's Tool Router enables agents to use multiple toolkits. [Learn more](https://docs.composio.dev/tool-router/overview).

### Is Composio secure?

Composio is SOC 2 and ISO 27001 compliant with all data encrypted in transit and at rest. [Learn more](https://trust.composio.dev).

### What if the API changes?

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)