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How to connect Lemlist to Claude

Connect Claude Web, Desktop and Cowork to Lemlist MCP. Export all leads from current campaign, download list of unsubscribed emails, and more using natural language, with authentication handled for you.

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Lemlist is a multichannel prospecting platform for outreach via email, LinkedIn, and calls. It streamlines lead generation and boosts reply rates with personalized, automated workflows.

54 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 Lemlist account to Claude via Composio Connect, enabling it to export all leads from current campaign, download list of unsubscribed emails, unsubscribe specific lead from a campaign, 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 Lemlist with

OpenAI Agents SDKClaude Agent SDKClaude CodeCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Lemlist 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 Lemlist account

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

For example, ask Claude to:

  • "Export all leads from current campaign"
  • "Download list of unsubscribed emails"
  • "Unsubscribe specific lead from a campaign"

It will prompt you to authenticate and authorize access.

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

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

The Lemlist MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Lemlist account. It provides structured and secure access to your outreach campaigns, so your agent can manage leads, automate campaign exports, monitor unsubscribe lists, and orchestrate multichannel engagement on your behalf.

  • Automated campaign management: Retrieve campaign details by ID, audit campaign sequences, and start or monitor campaign exports for streamlined reporting and analytics.
  • Lead and subscriber control: Unsubscribe leads from campaigns, delete unsubscribed emails, or export detailed lists of campaign leads to keep your outreach data fresh and compliant.
  • Outreach data exports: Initiate and track asynchronous exports of campaign statistics or download CSVs of unsubscribed contacts for deeper insights and record-keeping.
  • Webhook administration: Fetch all configured webhooks to sync Lemlist with your other tools or audit integration points for better workflow automation.
  • Schedule management: Permanently delete schedules you no longer need, ensuring your campaigns stay organized and up to date.

Troubleshooting

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

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

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

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

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

  • 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 Lemlist.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Lemlist authorization link not work?

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

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

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

The Lemlist connection can expire or lose permission.

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

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

Claude can manage the Lemlist connection for you.

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

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

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

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Lemlist 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 Lemlist.
TOOLS

Supported Tools

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

Create Company Note

Tool to create a note attached to a specific company.

Delete Schedule

Tool to delete a specific schedule by scheduleId.

Delete Unsubscribed Email

Tool to delete an email from the unsubscribed list.

Unsubscribe Lead From Campaign

Tool to unsubscribe a lead from a campaign.

Get All Webhooks

Tool to retrieve the list of all webhooks configured for the team.

Get Campaign By ID

Tool to retrieve a specific campaign by campaignId.

Start Campaign Export

Tool to start an asynchronous export of all campaign statistics (CSV).

Get Campaign Export Status

Tool to check the status of an asynchronous campaign export.

Get Campaign Sequences

Tool to retrieve a list of all sequences for a campaign with steps and conditions.

Get Campaign Stats

Tool to retrieve performance statistics for a specific campaign within a date range.

Get Companies Schema

Tool to retrieve the schema definition for companies in the people database.

Get Contact Messages

Tool to retrieve all messages exchanged with a specific contact.

Get Database Filters

Tool to retrieve available filters for searching the people and companies database.

Export Campaign Leads

Tool to export campaign leads with state filtering and choose between JSON or CSV output.

Export Unsubscribes

Tool to download a CSV file containing all unsubscribed email addresses.

Get Unsubscribed Email

Tool to retrieve a single unsubscribed email record.

Get Label

Tool to retrieve information about a specific label by its ID.

List Campaigns

Tool to retrieve a list of campaigns for the team.

List Tasks

Tool to retrieve all pending tasks assigned to team members.

List Team Senders

Tool to retrieve all team members and their associated campaigns.

List Watchlist Signals

Tool to retrieve paginated watchlist signals with filtering and sorting.

Get People Schema

Tool to retrieve the schema definition for people in the people database.

Retrieve Activities

Tool to fetch recent campaign activities.

Retrieve Lead By Email

Tool to retrieve a lead by their email address.

Retrieve Unsubscribes

Tool to retrieve the list of all people who are unsubscribed.

Get Team Credits

Tool to retrieve credits left in the team.

Get Team Info

Tool to retrieve information about your team.

Get User

Tool to retrieve all information for a specific user by their ID.

Get User Info

Tool to retrieve all information of the authenticated user.

List Companies

Tool to retrieve a paginated list of all companies in your CRM.

List Company Notes

Tool to retrieve all notes associated with a specific company.

List Labels

Tool to list all labels available to your team.

Mark Lead as Not Interested in Campaign

Tool to mark a lead as not interested in a specific campaign.

Update Campaign

Tool to update settings of a campaign.

Update Schedule

Tool to update an existing schedule with new parameters.

Update Sequence Step

Tool to update an existing step in a sequence (edit subject/message/delay/etc.

Add Step to Sequence

Tool to add a new step (email, LinkedIn, conditional, etc.

Add Unsubscribe Email/Domain

Tool to add an email or domain to the unsubscribed list.

Add Variables to Lead

Tool to add one or more variables to a lead.

Associate schedule with campaign

Tool to associate a schedule with a campaign.

Create Campaign

Tool to create a new campaign.

Create Label

Tool to create a new label for inbox conversations.

Create Lead In Campaign

Tool to create a lead and add it to a specific campaign.

Create Schedule

Tool to create a new schedule for the team.

Create Task

Tool to create a manual task (opportunity) associated with a contact, company, or lead.

Ignore Tasks

Tool to mark one or more tasks as ignored in Lemlist.

Mark Lead As Interested

Tool to mark a lead as interested in all campaigns.

Mark Lead As Interested In Campaign

Tool to mark a lead as interested in a specific campaign.

Mark Lead As Not Interested

Tool to mark a lead as not interested in all campaigns.

Pause a running campaign

Tool to pause a running campaign.

Pause Lead

Tool to pause a lead in all campaigns or a specific campaign.

Search Companies Database

Tool to search the companies database using filters, keywords, and pagination.

Search People Database

Tool to search the Lemlist people database using filters, keywords, and pagination.

Update Task

Tool to update an existing task including assignment, scheduling, and status.

FRAMEWORKS

How to build Lemlist MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Lemlist MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Lemlist MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Lemlist MCP with Claude Code

Codex logo

Codex

Use Lemlist MCP with Codex

OpenClaw logo

OpenClaw

Use Lemlist MCP with OpenClaw

Hermes logo

Hermes

Use Lemlist MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Lemlist MCP with Atomic Agent

Google ADK logo

Google ADK

Use Lemlist MCP with Google ADK

LangChain logo

LangChain

Use Lemlist MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Lemlist MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Lemlist MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Lemlist MCP with LlamaIndex

CrewAI logo

CrewAI

Use Lemlist MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Lemlist MCP with Pydantic AI

AutoGen logo

AutoGen

Use Lemlist MCP with AutoGen

FAQ

Frequently asked questions

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

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

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