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Business productivity ⇄ CRM

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

Keep Lemlist and Outreach 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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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
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Migrated from Celigo
Why teams connect Lemlist and Outreach

Sync what happens in Lemlist with the customer records in Outreach, 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 Unsubscribes, Webhooks, Team Members, Campaigns in Lemlist to Sequences, Sequence states, Mailings, Calls in Outreach with bi-directional, real-time sync. Activity and record changes in Lemlist update the matching contact or account in Outreach, and CRM data flows the other way wherever Lemlist can store and use it.

Common use cases

  • Push enriched leads from a warehouse or list-building workflow into Lemlist campaigns automatically
  • Propagate unsubscribes and bounces back to the CRM and other outreach tools for suppression compliance
  • Pull mailing, call, and task activity into a database for engagement analytics beyond native reports.
  • Keep account ownership and stages aligned between Outreach and the CRM as territories change.

Where Lemlist can store CRM context: fields kept current

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

Where Lemlist runs outreach

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

Where Lemlist supplies contact or company data

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

What you can sync between Lemlist and Outreach

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.

Lemlist objects Outreach objects
Leads Per-campaign prospect records sync in from enrichment sources and back out with status. Tasks Rep action items mirrored between Outreach and the CRM
Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. Opportunities Deal records used to tie engagement to pipeline outcomes
Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. Users Seat holders used to resolve ownership on synced records
Webhooks Hook subscriptions define which activity events are pushed to external endpoints. Mailboxes Connected sending accounts referenced when attributing outbound activity
Team Members Sender and seat records map outreach activity to reps in other systems. Prospects The people being engaged; the main record kept in sync with the CRM
Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows. Accounts Companies grouping prospects, aligned with CRM account ownership
What ships with Lemlist ⇄ Outreach

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

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

Real-time

Two-way sync

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

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Lemlist or Outreach 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 Lemlist or Outreach record.

Observability

Monitoring

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

Trading partners

EDI

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

How the Lemlist and Outreach connectors work

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

Outreach

Integration surface
REST API conforming to the JSON:API specification
Authentication
OAuth 2.0
Change detection
webhook subscriptions on resource create, update, and destroy events, plus polling
Capabilities
read · write · webhooks
Rate limits
subject to per-user hourly rate limits
How it works

How to connect Lemlist to Outreach — 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 Lemlist and Outreach 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
    Lemlist connected
    Outreach connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Lemlist and Outreach 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 · Lemlist ⇄ Outreach
    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
    Lemlist Outreach
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Lemlist and Outreach 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 Lemlist and Outreach.

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