# MyEmailVerifier

```json
{
  "name": "MyEmailVerifier",
  "slug": "myemailverifier",
  "url": "https://composio.dev/toolkits/myemailverifier",
  "markdown_url": "https://composio.dev/toolkits/myemailverifier.md",
  "logo_url": "https://logos.composio.dev/api/myemailverifier",
  "categories": [
    "advertising & marketing"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-10-04T15:02:42.460Z"
}
```

![MyEmailVerifier logo](https://logos.composio.dev/api/myemailverifier)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with MyEmailVerifier MCP or direct API to verify email deliverability, detect disposable addresses, flag role-based accounts, and check catch-all or greylisted status through natural language.

## Summary

MyEmailVerifier is an email verification service that checks deliverability, disposable addresses, role accounts, catch-all domains, and greylisting.
Use it to reduce bounces, protect sender reputation, and improve lead quality before you send.

## Categories

- advertising & marketing

## Toolkit Details

- Tools: 2

## Images

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

## Authentication

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

## Suggested Prompts

- Verify signup email deliverability before onboarding
- Flag disposable emails in lead lists
- Check catch-all status for customer domains

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `MYEMAILVERIFIER_VERIFY_EMAIL` | Verify Email | Verify one email address for deliverability and return MyEmailVerifier's status, diagnosis, and risk flags. Each request consumes one verification credit. |
| `MYEMAILVERIFIER_VERIFY_EMAILS` | Verify Emails | Verify 1 to 5 email addresses serially and return one ordered outcome per input. Each provider request is expected to consume one verification credit; locally invalid and unattempted items consume none. |

## Supported Triggers

None listed.

## Installation and MCP Setup

### Path 1: SDK Installation

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

Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
```python
pip install composio composio_openai openai
```

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

#### Path 1, Step 2: Create a Composio session

Initialize Composio with the OpenAI Responses provider and create a session scoped to MyEmailVerifier
```python
import json
from openai import OpenAI
from composio import Composio
from composio_openai import OpenAIResponsesProvider

composio = Composio(provider=OpenAIResponsesProvider())
client = OpenAI()

session = composio.create(user_id="your-user-id", toolkits=["myemailverifier"])
tools = session.tools()
```

```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: ["myemailverifier"] });
const tools = await session.tools();
```

#### Path 1, Step 3: Run MyEmailVerifier tools with your agent

Send a request, execute the MyEmailVerifier tool calls through the session, and print the final answer
```python
response = client.responses.create(
    model="gpt-5.6-sol",
    tools=tools,
    input=[{"role": "user", "content": "Verify lead@example.com with MyEmailVerifier and report deliverability, disposable, role-based, catch-all, and greylisted status"}],
)

while True:
    tool_calls = [o for o in response.output if o.type == "function_call"]
    if not tool_calls:
        break
    results = composio.provider.handle_tool_calls(response=response, session=session)
    response = client.responses.create(
        model="gpt-5.6-sol",
        tools=tools,
        previous_response_id=response.id,
        input=[
            {"type": "function_call_output", "call_id": call.call_id, "output": json.dumps(results[i])}
            for i, call in enumerate(tool_calls)
        ],
    )

print(response.output_text)
```

```typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Verify lead@example.com with MyEmailVerifier and report deliverability, disposable, role-based, catch-all, and greylisted status" }],
});

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);
```

### Path 2: MCP Server Setup

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

Install the Composio SDK and your agent framework
```python
pip install composio claude-agent-sdk
```

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

#### Path 2, Step 2: Create a session with MCP enabled

Create a session scoped to MyEmailVerifier and read its MCP URL and headers
```python
from composio import Composio

composio = Composio()
session = composio.create(user_id="your-user-id", toolkits=["myemailverifier"], mcp=True)
```

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

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["myemailverifier"],
  mcp: true,
});
```

#### Path 2, Step 3: Connect your agent to the MCP server

Pass the session's MCP URL and headers to your agent and run a MyEmailVerifier request
```python
import asyncio
from claude_agent_sdk import ClaudeSDKClient, ClaudeAgentOptions, AssistantMessage, TextBlock

options = ClaudeAgentOptions(
    mcp_servers={
        "composio": {
            "type": "http",
            "url": session.mcp.url,
            "headers": session.mcp.headers,
        }
    },
    system_prompt="You are a helpful assistant with access to MyEmailVerifier tools.",
    tools=[],
    allowed_tools=["mcp__composio__*"],
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query("Verify lead@example.com with MyEmailVerifier and report deliverability, disposable, role-based, catch-all, and greylisted status")
        async for message in client.receive_response():
            if isinstance(message, AssistantMessage):
                for block in message.content:
                    if isinstance(block, TextBlock):
                        print(block.text)

asyncio.run(main())
```

```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: "Verify lead@example.com with MyEmailVerifier and report deliverability, disposable, role-based, catch-all, and greylisted status",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
```

## Why Use Composio?

### 1. AI Native MyEmailVerifier Integration

- Supports both MyEmailVerifier MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable email verification workflows
- Rich coverage for checking deliverability, disposable emails, role accounts, catch-all domains, and greylisted status

### 2. Managed Auth

- Secure API key handling without hard-coding MyEmailVerifier credentials in your agent code
- Central place to manage, scope, and revoke MyEmailVerifier access
- Per user and per environment credentials so your staging and production agents stay cleanly separated

### 3. Agent Optimized Design

- Tools are tuned for clear inputs and outputs, so agents can act on email risk signals with fewer mistakes
- Comprehensive execution logs so you always know which email was checked, when, and on whose behalf

### 4. Enterprise Grade Security

- Fine-grained RBAC so you control which agents and users can access MyEmailVerifier
- Scoped, least privilege access for email verification workflows
- Full audit trail of agent actions to support review, compliance, and sender reputation checks

## Use MyEmailVerifier with any AI Agent Framework

Choose a framework you want to connect MyEmailVerifier with:

None listed.

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- [Elastic Email](https://composio.dev/toolkits/elastic_email) - Elastic Email is an email delivery and marketing platform for transactional emails, campaigns, contacts, and reporting. Use it to send reliable emails, manage audiences, verify addresses, and track performance.
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## Frequently Asked Questions

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

Yes, MyEmailVerifier requires you to configure your own API key. 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)