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CRM ⇄ Business productivity

Intercom to Lemlist integration — real-time, two-way sync

Keep Intercom and Lemlist in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

  • SOC 2 and 6 other compliance frameworks
  • POC with real engineers in minutes

Adopted by fast-scaling companies moving mission-critical data in real time

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Migrated from Mulesoft
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Why teams connect Intercom and Lemlist

Sync what happens in Lemlist with the customer records in Intercom, in real time and in both directions.

The CRM is supposed to be the record of every customer relationship, but customer-relevant information also accumulates in the other tools a team runs. Whatever Lemlist holds or produces that touches a customer, whether conversations, payments, replies, enriched data, or notes, the CRM only benefits if it arrives without someone copying it over.

Stacksync connects Leads, Activities, Unsubscribes, Webhooks in Lemlist to Custom Data Attributes, Tags, Segments, Admins & Teams in Intercom with bi-directional, real-time sync. Activity and record changes in Lemlist update the matching contact or account in Intercom, and CRM data flows the other way wherever Lemlist can store and use it.

Common use cases

  • Propagate unsubscribes and bounces back to the CRM and other outreach tools for suppression compliance
  • Stop or pause sequences automatically when a reply converts to a deal in the CRM
  • Push product usage events from an application database into Intercom to trigger onboarding and retention messages
  • Mirror conversations and tickets into a warehouse for support analytics and SLA reporting

Where Lemlist runs outreach

Prospects, sends, and replies sync into Intercom, keeping lead status current without manual imports.

Where Lemlist supplies contact or company data

Enriched fields land directly on records in Intercom, and refreshes keep them from going stale.

Where Lemlist can store CRM context: fields kept current

Owner, lifecycle stage, or account details from Intercom sync into Lemlist, so people working there have the context without switching tools.

What you can sync between Intercom and Lemlist

Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.

Intercom objects Lemlist objects
Companies Company records group contacts and carry plan and account attributes used in segmentation. Webhooks Hook subscriptions define which activity events are pushed to external endpoints.
Conversations Support and sales threads sync outward for analytics and CRM context. Team Members Sender and seat records map outreach activity to reps in other systems.
Tickets Structured ticket records track issues alongside conversational threads. Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows.
Data Events Behavioral events pushed in from product databases trigger messages and flows. Leads Per-campaign prospect records sync in from enrichment sources and back out with status.
Custom Data Attributes Typed custom fields on contacts and companies hold synced billing and usage data. Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines.
Tags Labels applied to contacts, companies, and conversations sync for routing and reporting. Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance.
What ships with Intercom ⇄ Lemlist

Connect Intercom and Lemlist for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Intercom–Lemlist connection.

Real-time

Two-way sync

Changes in Intercom or Lemlist instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Intercom or Lemlist data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single Intercom or Lemlist record.

Observability

Monitoring

Track your Intercom ⇄ Lemlist sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between Intercom and Lemlist.

How the Intercom and Lemlist connectors work

Intercom

Integration surface
REST API
Authentication
OAuth 2.0 for public apps or a workspace access token
Change detection
Webhook topic subscriptions for contact, company, and conversation events, plus polling for backfill
Capabilities
read · write · webhooks
Rate limits
Subject to per-app rate limits on the Intercom API

Lemlist

Integration surface
REST API
Authentication
API key
Change detection
Webhooks on outreach activity events, plus polling
Capabilities
read · write · webhooks
Rate limits
Subject to the platform's API rate limits
How it works

How to connect Intercom to Lemlist — three steps, no code

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate Intercom and Lemlist with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Intercom connected
    Lemlist connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Intercom and Lemlist objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Intercom ⇄ Lemlist
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Intercom Lemlist
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Intercom and Lemlist integration FAQ

SECURITY

Security teams love Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 386 integrations available for Intercom and Lemlist.

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