Real-time
Two-way sync
Changes in Front or Lemlist instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Front to Lemlist integration — real-time, two-way sync
Keep Front 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
Case study
Migrated from Mulesoft
Case study
Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
Case study
Migrated from Fivetran
Case study
Migrated from Celigo
Why teams connect Front and Lemlist
Stop re-entering the same information in Front and Lemlist: Stacksync keeps the records they share consistent in real time, in both directions.
Two tools in the daily stack often hold overlapping information: the same people, the same companies, or the same pieces of work, described twice. The tools do different jobs, so consolidating is not the answer; the overlap just needs to stop drifting.
Stacksync syncs Accounts, Inboxes, Tags, Teammates in Front with Webhooks, Team Members, Campaigns, Leads in Lemlist in real time. You choose which records overlap, map the fields that should match, and pick a direction or let changes flow both ways. From then on, an update made in either tool is reflected in the other within seconds, without exports or copy-paste.
Because the sync is field-level, each tool keeps its own extras; only the shared data is held in agreement.
Common use cases
- Keep Front contacts and accounts aligned with CRM contacts and accounts in both directions.
- Mirror conversations tagged for escalation into engineering trackers through the synced database.
- 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
Where one tool produces events: mirror them in the other
Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
Where Lemlist is where the team documents or plans: keep its data fed
Information that originates in Front stays current in Lemlist instead of going stale after a one-time paste.
Handoffs between teams
When work started in one tool continues in the other, the shared fields travel with it automatically.
What you can sync between Front 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.
| Front objects | Lemlist objects | |
|---|---|---|
| Comments Internal team notes on conversations; usually read-only in syncs. | Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | |
| Contacts People across channels; matched to CRM contacts, with custom fields carrying external context. | Team Members Sender and seat records map outreach activity to reps in other systems. | |
| Accounts Company groupings of contacts; kept aligned with CRM accounts. | Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows. | |
| Inboxes Shared queues that conversations live in; used to segment reporting by team or channel. | Leads Per-campaign prospect records sync in from enrichment sources and back out with status. | |
| Tags Labels applied to conversations; drive routing and category-level analytics. | Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. | |
| Teammates Agents; used for ownership mapping and workload reporting. | Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. |
What ships with Front ⇄ Lemlist
Connect Front and Lemlist for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Front–Lemlist connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Front 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 Front or Lemlist record.
Observability
Monitoring
Track your Front ⇄ Lemlist sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Front and Lemlist.
How the Front and Lemlist connectors work
Front
- Integration surface
- REST API (Core API)
- Authentication
- OAuth authorization via the Stacksync UI ("Connections" > "create new connection" > "Front" > "Authorize") — no coding required
- Change detection
- Application webhooks and rule-triggered webhooks, with the events endpoint available for polling
- Capabilities
- read · write · webhooks
- Rate limits
- Request limits vary by plan.
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 Front 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.
- 01
Connect your apps
Authenticate Front 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.
Front
connected
Lemlist
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Front 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.
objects · Front ⇄ LemlistCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Front LemlistCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Front and Lemlist integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Front and Lemlist: authenticate both systems, choose the objects to sync (such as Front's Comments and Contacts), map fields visually, and changes propagate both ways in milliseconds — no code required.
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On the Front side: Accounts, Inboxes, Tags, Teammates, plus custom fields where Front exposes them. On the Lemlist side: Webhooks, Team Members, Campaigns, Leads. Stacksync auto-detects both schemas and converts types between the two systems.
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Yes. Each object mapping can be bidirectional or restricted to a single direction (both systems accept writes). Read-only mirrors, one-way pushes, and full two-way sync can be mixed in the same integration.
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Common patterns for Front and Lemlist: Where one tool produces events: mirror them in the other; Where Lemlist is where the team documents or plans: keep its data fed; Handoffs between teams. Payments, replies, messages, or tickets created in one tool can create or update matching records in the other, keeping context in one place.
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Front: REST API (Core API). Authentication: OAuth authorization via the Stacksync UI ("Connections" > "create new connection" > "Front" > "Authorize") — no coding required. Lemlist: REST API. Authentication: API key. Stacksync manages authentication, retries, and rate limits on both sides.
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Front: The data model is conversation-centric: messages, comments, and tags attach to conversations rather than tickets, which shapes how support data maps to relational tables. Lemlist: Activity events such as replies, opens, bounces, and unsubscribes can be delivered via webhooks, enabling near real-time updates to CRM records without polling every campaign. Stacksync's field mapping accounts for these differences between Front and Lemlist without custom code.
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.
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:
Related integrations
Every pair below is a real-time, two-way sync. Search all 386 integrations available for Front and Lemlist.
Popular · 8 of 386
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Front ⇄ Google Sheets -
Front ⇄ Klaviyo -
Front ⇄ Lusha -
Front ⇄ Microsoft 365 -
Lemlist ⇄ Resend - Lemlist ⇄ ServiceNow
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Lemlist ⇄ Slack -
Lemlist ⇄ Zendesk
No integrations match .
