How to connect Lemlist to Claude Cowork

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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 Lemlist account to Cowork 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.

Also integrate Lemlist with

Connecting Lemlist 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 Lemlist account

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

For example, ask Cowork 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 Cowork, and your Lemlist 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 Lemlist through MCP without you sharing account credentials directly with the agent.

What is the Lemlist MCP server, 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.

Supported Tools & Triggers

Tools
Create Company NoteTool to create a note attached to a specific company.
Delete ScheduleTool to delete a specific schedule by scheduleId.
Delete Unsubscribed EmailTool to delete an email from the unsubscribed list.
Unsubscribe Lead From CampaignTool to unsubscribe a lead from a campaign.
Get All WebhooksTool to retrieve the list of all webhooks configured for the team.
Get Campaign By IDTool to retrieve a specific campaign by campaignId.
Start Campaign ExportTool to start an asynchronous export of all campaign statistics (CSV).
Get Campaign Export StatusTool to check the status of an asynchronous campaign export.
Get Campaign SequencesTool to retrieve a list of all sequences for a campaign with steps and conditions.
Get Campaign StatsTool to retrieve performance statistics for a specific campaign within a date range.
Get Companies SchemaTool to retrieve the schema definition for companies in the people database.
Get Contact MessagesTool to retrieve all messages exchanged with a specific contact.
Get Database FiltersTool to retrieve available filters for searching the people and companies database.
Export Campaign LeadsTool to export campaign leads with state filtering and choose between JSON or CSV output.
Export UnsubscribesTool to download a CSV file containing all unsubscribed email addresses.
Get Unsubscribed EmailTool to retrieve a single unsubscribed email record.
Get LabelTool to retrieve information about a specific label by its ID.
List CampaignsTool to retrieve a list of campaigns for the team.
List TasksTool to retrieve all pending tasks assigned to team members.
List Team SendersTool to retrieve all team members and their associated campaigns.
List Watchlist SignalsTool to retrieve paginated watchlist signals with filtering and sorting.
Get People SchemaTool to retrieve the schema definition for people in the people database.
Retrieve ActivitiesTool to fetch recent campaign activities.
Retrieve Lead By EmailTool to retrieve a lead by their email address.
Retrieve UnsubscribesTool to retrieve the list of all people who are unsubscribed.
Get Team CreditsTool to retrieve credits left in the team.
Get Team InfoTool to retrieve information about your team.
Get UserTool to retrieve all information for a specific user by their ID.
Get User InfoTool to retrieve all information of the authenticated user.
List CompaniesTool to retrieve a paginated list of all companies in your CRM.
List Company NotesTool to retrieve all notes associated with a specific company.
List LabelsTool to list all labels available to your team.
Mark Lead as Not Interested in CampaignTool to mark a lead as not interested in a specific campaign.
Update CampaignTool to update settings of a campaign.
Update ScheduleTool to update an existing schedule with new parameters.
Update Sequence StepTool to update an existing step in a sequence (edit subject/message/delay/etc.
Add Step to SequenceTool to add a new step (email, LinkedIn, conditional, etc.
Add Unsubscribe Email/DomainTool to add an email or domain to the unsubscribed list.
Add Variables to LeadTool to add one or more variables to a lead.
Associate schedule with campaignTool to associate a schedule with a campaign.
Create CampaignTool to create a new campaign.
Create LabelTool to create a new label for inbox conversations.
Create Lead In CampaignTool to create a lead and add it to a specific campaign.
Create ScheduleTool to create a new schedule for the team.
Create TaskTool to create a manual task (opportunity) associated with a contact, company, or lead.
Ignore TasksTool to mark one or more tasks as ignored in Lemlist.
Mark Lead As InterestedTool to mark a lead as interested in all campaigns.
Mark Lead As Interested In CampaignTool to mark a lead as interested in a specific campaign.
Mark Lead As Not InterestedTool to mark a lead as not interested in all campaigns.
Pause a running campaignTool to pause a running campaign.
Pause LeadTool to pause a lead in all campaigns or a specific campaign.
Search Companies DatabaseTool to search the companies database using filters, keywords, and pagination.
Search People DatabaseTool to search the Lemlist people database using filters, keywords, and pagination.
Update TaskTool to update an existing task including assignment, scheduling, and status.

How to build Lemlist MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Lemlist MCP?

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.

Can I use Tool Router MCP with Claude Cowork?

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.

Can I manage the permissions and scopes for Lemlist while using Tool Router?

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.

How safe is my data with Composio Tool Router?

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.

Used by agents from

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Agent.ai
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DataStax
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Context
Letta
glean
HubSpot
Agent.ai
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Entelligence
Rolai

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We handle tool reliability, observability, and security so you never have to second-guess an agent action.