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Lemlist MCP server

Give your AI assistant 14 tools it can call in Lemlist, over one server URL.

Lemlist is not a separate install. One Activepieces MCP server exposes it alongside 770+ other apps, behind a single URL.

Tools
14
Works with
Any MCP client
Auth
API key
License
MIT, open source
Updated
November 2026

About the Lemlist MCP server

Connect Lemlist once in Activepieces and every action it ships becomes a tool your assistant can call, behind the same server URL as the rest of your apps. Your agent reaches Lemlist and 770+ other apps over a single connection, on our cloud or a self-hosted install.

Tools

Lemlist tools your AI can run

Once connected, your assistant can call any of these Lemlist actions by asking in plain language.

  • Mark Lead From One Campaign as Interested

    Mark a lead in a campaign as interested.

    2 fields

  • Mark Lead From One Campaign as Not Interested

    Mark a lead in a campaign as not interested.

    2 fields

  • Mark Lead From All Campaign as Interested

    Mark a lead as “interested” across all campaigns.

    1 field

  • Mark Lead From All Campaigns as Not Interested

    Mark a lead as “not interested” across all campaigns.

    1 field

  • Pause Lead From All or Specific Campaigns

    Pause a lead’s outreach across all or specific campaigns.

    2 fields

  • Resume Lead From All or Specific Campaigns

    Resume a lead’s outreach across all or specific campaigns. Resumed leads can receive emails right away.

    2 fields

  • Remove Lead From Unsubscribe List

    Remove a lead from the “unsubscribe” list so lemlist can contact them again. Only do this when the person opted back in.

    1 field

  • Remove Lead from A Campaign

    Removes a lead from a specific campaign.

    2 fields

  • Unsubscribe a Lead

    Unsubscribe a lead from a campaign.

    2 fields

  • Add Lead To A Campaign

    Adds a lead to a specific campaign with optional enrichment and lead details. Enrichment options use lemlist credits.

    16 fields

  • Add Custom Variables on Lead

    Add new custom variables to a lead.

    2 fields

  • Update Lead From Campaign

    Updates a lead in a specific campaign. Empty fields are left unchanged.

    11 fields

  • Search Lead

    Look up a lead by email and campaign.

    2 fields

  • Custom API Call

    Make a custom API call to a specific endpoint

    10 fields

Triggers

Lemlist events your agent can watch

These start a run the moment something happens in Lemlist, so work gets picked up on its own.

  • New Activity

    Triggers for each new activity, optionally only some event types or one campaign.

    2 fields

  • Unsubscribed Recipient

    Triggers when a recipient unsubscribes.

Give your assistant Lemlist

Connect Lemlist once and every tool above is callable from Claude, Cursor or any MCP client, behind the same server URL as 770+ other apps. Free to start.

Lemlist MCP, answered.

No. That is the point of it. One Activepieces server exposes Lemlist alongside every other piece you connect, so your client keeps a single connection.

Yes. Activepieces is open source and free to start, and the MCP server is included on every plan, from the free cloud tier to any self-hosted deployment.

Connect Lemlist in Activepieces, enable the server under Settings → MCP Server, then paste your server URL into your client config. It authenticates over OAuth on first use.

It can call 14 tools, including Mark Lead From One Campaign as Interested, Mark Lead From One Campaign as Not Interested, Mark Lead From All Campaign as Interested, and chain them with steps in other apps inside the same run.

Connections use OAuth2 with limited scopes and are stored under 256-bit encryption, with no API to read them back, so an agent gets scoped access rather than your keys.