Lemlist Automation

Automate your Lemlist multichannel outreach workflows -- manage campaigns, enroll leads at scale, enrich with custom variables, export campaign data, and clean up unsubscribes.

Toolkit docs: composio.dev/toolkits/lemlist

Setup

Add the Composio MCP server to your client: https://rube.app/mcp
Connect your Lemlist account when prompted (API key authentication)
Start using the workflows below

Core Workflows

1. List and Discover Campaigns

Use LEMLIST_GET_LIST_CAMPAIGNS to enumerate all campaigns by status, with pagination support.

Tool: LEMLIST_GET_LIST_CAMPAIGNS
Inputs:
  - status: "running" | "draft" | "archived" | "ended" | "paused" | "errors" (optional)
  - limit: integer (max 100, default 100)
  - offset: integer (pagination offset)
  - sortBy: "createdAt"
  - sortOrder: "asc" | "desc"

Important: The response may be wrapped as {campaigns: [...], pagination: {...}} instead of a flat list. Always extract from the campaigns key.

2. Get Campaign Details

Use LEMLIST_GET_CAMPAIGN_BY_ID to validate campaign configuration before writes.

Tool: LEMLIST_GET_CAMPAIGN_BY_ID
Inputs:
  - campaignId: string (required) -- e.g., "cam_A1B2C3D4E5F6G7H8I9"

3. Enroll Leads into a Campaign

Use LEMLIST_POST_CREATE_LEAD_IN_CAMPAIGN to add leads with optional email finding, phone lookup, and LinkedIn enrichment.

Tool: LEMLIST_POST_CREATE_LEAD_IN_CAMPAIGN
Inputs:
  - campaignId: string (required)
  - email: string (required)
  - firstName, lastName, companyName, companyDomain: string (optional)
  - jobTitle, phone, linkedinUrl, icebreaker: string (optional)
  - deduplicate: boolean (prevents cross-campaign duplicates)
  - findEmail, findPhone, verifyEmail, linkedinEnrichment: boolean (optional)
  - timezone: string (IANA format, e.g., "America/New_York")

Bulk pattern: Chunk leads into batches of ~50 and checkpoint progress between batches.

4. Add Custom Variables to a Lead

Use LEMLIST_POST_ADD_VARIABLES_TO_LEAD to enrich leads with personalization fields after enrollment.

Tool: LEMLIST_POST_ADD_VARIABLES_TO_LEAD
Inputs:
  - leadId: string (required) -- internal Lemlist lead ID (NOT email)
  - company: string (required) -- must match your company name in Lemlist
  - variables: object (required) -- key-value pairs, e.g., {"score": "42", "color": "yellow"}

Important: This is NOT an upsert -- attempting to add variables that already exist will fail. Resolve the internal leadId via LEMLIST_GET_RETRIEVE_LEAD_BY_EMAIL if you only have the email address.

5. Export Campaign Leads

Use LEMLIST_GET_EXPORT_CAMPAIGN_LEADS to download leads with state filtering for reporting or QA.

Tool: LEMLIST_GET_EXPORT_CAMPAIGN_LEADS
Inputs:
  - campaignId: string (required)
  - (supports state filtering and JSON/CSV output)

6. Unsubscribe Lead from Campaign

Use LEMLIST_DELETE_UNSUBSCRIBE_LEAD_FROM_CAMPAIGN to stop outreach by removing a lead from a campaign.

Tool: LEMLIST_DELETE_UNSUBSCRIBE_LEAD_FROM_CAMPAIGN
Inputs:
  - campaignId: string (required)
  - leadId or email: string (required)

Known Pitfalls

| Pitfall | Detail | |---------|--------| | Wrapped campaign list | LEMLIST_GET_LIST_CAMPAIGNS may return {campaigns: [...], pagination: {...}} instead of a flat array. Always extract from the campaigns key. | | Cross-campaign deduplication | LEMLIST_POST_CREATE_LEAD_IN_CAMPAIGN with deduplication enabled fails with HTTP 500 "Lead already in other campaign" -- disable deduplication for intentional cross-campaign enrollment. | | Bulk import failures | Chunk bulk imports to ~50 per batch with checkpoints to avoid losing partial progress on intermittent failures. | | Invalid leadId | LEMLIST_POST_ADD_VARIABLES_TO_LEAD returns HTTP 400 "Invalid leadId" when using an email as the leadId -- resolve the internal ID via LEMLIST_GET_RETRIEVE_LEAD_BY_EMAIL first. | | Variable collisions | LEMLIST_POST_ADD_VARIABLES_TO_LEAD is not an upsert. Adding keys that already exist returns HTTP 400 "Variables X already exist". |

Quick Reference

| Tool Slug | Description | |-----------|-------------| | LEMLIST_GET_LIST_CAMPAIGNS | List all campaigns with status filter and pagination | | LEMLIST_GET_CAMPAIGN_BY_ID | Get detailed campaign info by ID | | LEMLIST_POST_CREATE_LEAD_IN_CAMPAIGN | Create and enroll a lead into a campaign | | LEMLIST_POST_ADD_VARIABLES_TO_LEAD | Add custom personalization variables to a lead | | LEMLIST_GET_RETRIEVE_LEAD_BY_EMAIL | Look up a lead by email address | | LEMLIST_GET_EXPORT_CAMPAIGN_LEADS | Export leads from a campaign with state filtering | | LEMLIST_DELETE_UNSUBSCRIBE_LEAD_FROM_CAMPAIGN | Remove a lead from a campaign |