How do I connect Lemlist?

Add the Lemlist piece to a flow, then authenticate with API key. Once connected, its 2 triggers and 13 actions are available anywhere in the builder.

What can I automate with Lemlist?

"New Activity" can start a flow that runs "Mark Lead From One Campaign as Interested", and you can chain Lemlist together with any of 760+ other apps and AI steps in between.

Can I self-host the Lemlist integration?

Yes. Activepieces is fully self-hostable, so you can run the Lemlist piece on your own infrastructure with your connections and your data staying in your environment.

Can my AI agent use Lemlist as a tool?

Yes. Every piece you connect can be exposed over one Activepieces MCP server, so Claude, Cursor, Windsurf or any MCP client can call Lemlist actions as tools.

Lemlist integration

Connect Lemlist to Activepieces and automate it end to end, without writing code.

Start building Use Lemlist with your AI

Actions: 13
Triggers: 2
Auth: API key
License: MIT, open source
Updated: August 2026

About the Lemlist integration

Add the Lemlist piece to a flow, connect your account once, and the rest of the builder can read from it and write to it. Because the piece is open source you can run it on our cloud or self-host it, and combine Lemlist with 760+ other apps in the same flow.

Triggers

Start a flow the moment something happens in Lemlist

Each trigger below can start a flow on its own, either instantly or on a schedule.

New Activity
Triggers for each new activity.
Unsubscribed Recipient
Triggers when a recipient unsubscribes.

Actions

Everything Activepieces can do in Lemlist

Drop any of these into a flow and fill in the fields. No code is required.

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.
2 fields
Remove Lead From Unsubscribe List
Remove a lead from “unsubscribe” list.
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.
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.
11 fields
Search Lead
Look up a lead by email and campaign.
2 fields

Use Lemlist in a flow

Connect Lemlist once and every trigger and action above is yours to drop into the builder, alongside 760+ other apps. Free to start, on our cloud or your own servers.

Build a Lemlist flow Talk to sales

Lemlist, answered.

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