# Verifi.Email

```json
{
  "name": "Verifi.Email",
  "slug": "verifi_email",
  "url": "https://composio.dev/toolkits/verifi_email",
  "markdown_url": "https://composio.dev/toolkits/verifi_email.md",
  "logo_url": "https://logos.composio.dev/api/verifi_email",
  "categories": [
    "developer tools & devops"
  ],
  "is_composio_managed": false,
  "updated_at": "2026-10-04T15:11:39.628Z"
}
```

![Verifi.Email logo](https://logos.composio.dev/api/verifi_email)

## Description

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with Verifi.Email MCP or direct API to validate email addresses, check domain security records, flag risky contacts, and clean lead lists through natural language.

## Summary

Verifi.Email is a public API for validating email addresses and checking domain mail-security records.
Use it to screen bad emails and catch missing SPF, DKIM, or DMARC setup fast.

## Categories

- developer tools & devops

## Toolkit Details

- Tools: 3

## Images

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

## Authentication

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

## Suggested Prompts

- Validate new user signup email addresses
- Check domain SPF DKIM DMARC records
- Flag risky emails before outreach campaigns

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `VERIFI_EMAIL_CHECK_DOMAIN_HEALTH` | Check Domain Health | Check a bare domain's SPF, DKIM, DMARC, and BIMI configuration and return protocol scores plus provider recommendations. |
| `VERIFI_EMAIL_VALIDATE_EMAIL` | Validate Email | Validate one non-empty email address and return its overall validity plus syntax, MX, spoofing, and disposable-address signals. |
| `VERIFI_EMAIL_VALIDATE_EMAILS` | Validate Emails | Validate 1-10 email address strings in one synchronous request and return one ordered result per input, including malformed strings as invalid results. |

## 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 Verifi.Email
```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=["verifi_email"])
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: ["verifi_email"] });
const tools = await session.tools();
```

#### Path 1, Step 3: Run Verifi.Email tools with your agent

Send a request, execute the Verifi.Email 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": "Validate support@example.com and check its domain security"}],
)

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: "Validate support@example.com and check its domain security" }],
});

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 Verifi.Email and read its MCP URL and headers
```python
from composio import Composio

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

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

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["verifi_email"],
  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 Verifi.Email 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 Verifi.Email tools.",
    tools=[],
    allowed_tools=["mcp__composio__*"],
)

async def main():
    async with ClaudeSDKClient(options=options) as client:
        await client.query("Validate support@example.com and check its domain security")
        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: "Validate support@example.com and check its domain security",
  stopWhen: stepCountIs(10),
});

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

## Why Use Composio?

### 1. AI Native Verifi.Email Integration

- Supports both Verifi.Email MCP and direct API based integrations
- Structured, LLM-friendly schemas for reliable email validation and domain-security checks
- Rich coverage for verifying addresses, checking deliverability signals, and reviewing SPF, DKIM, and DMARC setup

### 2. Managed Auth

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

### 3. Agent Optimized Design

- Tools are tuned using real error and success rates to improve reliability over time
- Clear schemas help agents choose the right Verifi.Email action for validation, lookup, and security checks
- 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 Verifi.Email
- Scoped, least privilege access to Verifi.Email resources
- Full audit trail of agent actions to support review and compliance

## Use Verifi.Email with any AI Agent Framework

Choose a framework you want to connect Verifi.Email with:

None listed.

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## Frequently Asked Questions

### Do I need my own developer credentials to use Verifi.Email with Composio?

Yes, Verifi.Email 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)