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How to connect Verifiedemail to Claude

Connect Claude Web, Desktop and Cowork to Verifiedemail MCP. Verify if this email address is valid, check remaining email verification credits, and more using natural language, with authentication handled for you.

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Verifiedemail is a service for real-time email verification and bulk cleaning. It helps you maintain accurate, high-quality email lists for better deliverability.

9 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Verifiedemail account to Claude via Composio Connect, enabling it to verify if this email address is valid, check remaining email verification credits, get status of your recent file upload, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Verifiedemail with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Verifiedemail to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Verifiedemail account

Back in Claude, ask it to connect to Verifiedemail or give it any Verifiedemail-related task.

For example, ask Claude to:

  • "Verify if this email address is valid"
  • "Check remaining email verification credits"
  • "Get status of your recent file upload"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Verifiedemail account is ready to use.

What is the Verifiedemail Claude Connector, and what's possible with it?

The Verifiedemail MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Verifiedemail account. It provides structured and secure access to your email verification services, so your agent can perform actions like verifying email addresses, cleaning email lists, checking credit balances, and managing credential sharing on your behalf.

  • Real-time email verification: Instantly check the validity and deliverability of any email address, ensuring your messages reach real recipients.
  • Bulk email list cleaning: Automate the process of uploading and verifying large email lists to maintain high deliverability and reduce bounce rates.
  • Credit balance monitoring: Let your agent retrieve and monitor your remaining verification credits so you never run out unexpectedly.
  • Credential sharing and management: Fetch and update shared credentials securely, supporting workflows where multiple users need access or updates to verification data.
  • File verification status tracking: Poll and check the progress of bulk email verification jobs, helping you stay updated on list cleaning operations.

Troubleshooting

1. Why does Claude not use the Composio connector for Verifiedemail?

The connector can show as connected, but Claude must use it in each Verifiedemail conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Verifiedemail again.

2. Why does Claude show an MCP server error before Verifiedemail connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Verifiedemail.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Verifiedemail.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Verifiedemail authorization link not work?

The Composio connector is one server. Your Verifiedemail account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Verifiedemail connection.
  • Composio creates a fresh Verifiedemail authorization link.
  • Open that link in your browser and finish the Verifiedemail sign-in.

4. Why do Verifiedemail actions fail after they worked before?

The Verifiedemail connection can expire or lose permission.

  • Ask Claude to inspect the Verifiedemail connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Verifiedemail account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Verifiedemail.
  • If the action still fails with a permission error, check that the connected account has that permission in Verifiedemail itself.

5. How do I switch to a different Verifiedemail account?

Claude can manage the Verifiedemail connection for you.

  • Ask Claude to disconnect or delete the current Verifiedemail account.
  • Ask Claude to connect Verifiedemail again.
  • Open the new Composio authorization link for Verifiedemail.
  • Sign in with the other Verifiedemail account in the browser.
  • After the account connects, ask Claude to retry the Verifiedemail task.

6. Why is my Verifiedemail connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Verifiedemail connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Verifiedemail tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Verifiedemail.
TOOLS

Supported Tools

Every Verifiedemail action and event your agent gets out of the box.

Check Credits

Tool to retrieve the remaining verification credits.

Check File Status

Tool to check the status of a previously uploaded file.

Get 1-Click User Data

Tool to retrieve data for a user who has completed a 1-Click Signup flow.

Get Entitlements

Tool to retrieve information about available credits across different entitlement types.

Get Shared Credentials

Tool to retrieve a list of shared credential IDs.

List Downloads

Tool to get a list of previously created download requests.

List Lists

Tool to get all email lists in your account.

Update 1-Click Credentials

Tool to update 1-Click credentials.

Verify Email

Tool to verify the deliverability and validity of an email address.

FRAMEWORKS

How to build Verifiedemail MCP Agent with another framework

Claude Code logo

Claude Code

Use Verifiedemail MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Verifiedemail MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Verifiedemail MCP with Claude Agent SDK

Codex logo

Codex

Use Verifiedemail MCP with Codex

OpenClaw logo

OpenClaw

Use Verifiedemail MCP with OpenClaw

Hermes logo

Hermes

Use Verifiedemail MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Verifiedemail MCP with Atomic Agent

Google ADK logo

Google ADK

Use Verifiedemail MCP with Google ADK

LangChain logo

LangChain

Use Verifiedemail MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Verifiedemail MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Verifiedemail MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Verifiedemail MCP with LlamaIndex

CrewAI logo

CrewAI

Use Verifiedemail MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Verifiedemail MCP with Pydantic AI

AutoGen logo

AutoGen

Use Verifiedemail MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Verifiedemail MCP server, the agents and LLMs can only access a fixed set of Verifiedemail tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Verifiedemail and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Verifiedemail tools.

Yes, absolutely. You can configure which Verifiedemail scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Verifiedemail data and credentials are handled as safely as possible.

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