How to connect Invalid Bounce to Claude Cowork

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Invalid Bounce account to Cowork via Composio Connect, enabling it to verify new newsletter subscriber email list, flag risky addresses before campaign launch, validate imported CRM contact emails, and more such actions on your behalf without compromising your account security.

Invalid Bounce logoInvalid Bounce
Api Key

Invalid Bounce is an email verification service with a bulk verification API. Use it to clean email lists, reduce bounces, and protect sender reputation.

1 Tools

Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Invalid Bounce account to Cowork via Composio Connect, enabling it to verify new newsletter subscriber email list, flag risky addresses before campaign launch, validate imported CRM contact emails, and more such actions on your behalf without compromising your account security.

Also integrate Invalid Bounce with

Connecting Invalid Bounce to Claude Cowork

1. Open Customize

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

2. Add the Composio MCP server

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

3. 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 Cowork

4. Connect your Invalid Bounce account

Back in Cowork, ask the agent to connect to Invalid Bounce or give it any Invalid Bounce-related task.

For example, ask Cowork to:

  • "Verify new newsletter subscriber email list"
  • "Flag risky addresses before campaign launch"
  • "Validate imported CRM contact emails"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Invalid Bounce account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Invalid Bounce through MCP without you sharing account credentials directly with the agent.

What is the Invalid Bounce MCP server, and what's possible with it?

The Invalid Bounce MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Invalid Bounce account. It provides structured and secure access to bulk email verification, so your agent can submit email lists, start asynchronous verification jobs, validate campaign recipients, and check lead batches on your behalf.

  • Bulk email verification: Have your agent submit a batch of email addresses for verification through your connected Invalid Bounce account.
  • Campaign list checks: Direct your agent to start verifying a recipient list before you use it for an email campaign.
  • Lead batch validation: Let the agent initiate verification for a batch of prospect or customer email addresses.
  • Asynchronous verification jobs: Instruct your agent to start a background verification job using your account's available quota.
TOOLS

Supported Tools

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

Start Bulk Email Verification

Irreversibly start an asynchronous email-verification job using the connected account's verification quota.

FAQ

Frequently asked questions

With a standalone Invalid Bounce MCP server, the agents and LLMs can only access a fixed set of Invalid Bounce tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Invalid Bounce 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 Invalid Bounce tools.

Yes, absolutely. You can configure which Invalid Bounce 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 Invalid Bounce data and credentials are handled as safely as possible.

Start with Invalid Bounce.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Invalid Bounce tool your agent needs.Free to start.

Start building