Real-time
Two-way sync
Changes in Lemlist or Smartrecruiters instantly reflect in both systems. No stale data, no manual imports.
Business productivity ⇄ Human resources
Lemlist to Smartrecruiters integration — real-time, two-way sync
Keep Lemlist and Smartrecruiters in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
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Adopted by fast-scaling companies moving mission-critical data in real time
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Why teams connect Lemlist and Smartrecruiters
Keep the people, teams, and status that Lemlist and Smartrecruiters share aligned in real time, so a hire, role change, or departure recorded in one reaches the other within seconds.
Each tool in Lemlist keeps its own list of who can use it: users, members, or agents, along with the team they sit on and whether they are still active. Smartrecruiters is the authoritative record of the same people as employees, with their department, manager, and employment status. When those two are connected only by manual account admin or a periodic export, the work tools drift: new hires wait days for access, team and manager changes never catch up, and people who have left keep standing accounts.
Stacksync syncs Unsubscribes, Webhooks, Team Members, Campaigns in Lemlist with Approvals, Candidates, Applications, Jobs in Smartrecruiters bi-directionally and in real time. A person added, moved, or offboarded in Smartrecruiters creates or updates the matching user in Lemlist within seconds, with field-level mapping and conflict resolution in place of spreadsheets and one-off account changes. Where Lemlist captures details of its own, such as a corrected contact or a login identity, those can flow back to Smartrecruiters in whichever direction you configure.
Because the sync is field-level, each system keeps its own extras; only the shared facts, who a person is, which team they belong to, and whether their access should be on, are held in agreement.
Common use cases
- 01 Push enriched leads from a warehouse or list-building workflow into Lemlist campaigns automatically
- 02 Propagate unsubscribes and bounces back to the CRM and other outreach tools for suppression compliance
- 03 Two-way sync Candidates and Applications with Postgres so recruiting-ops apps read and update hiring status, tags, and custom fields in SQL while recruiters keep working in SmartRecruiters.
- 04 Write enriched or sourced Candidates from external sourcing tools into SmartRecruiters and keep contact fields refreshed as data changes.
Common sync patterns
One employee directory
A person's name, title, contact details, or status corrected in either system updates the other, so both sides stop maintaining separate copies of the same person.
Org and team structure kept current
Department, team, and reporting-line changes from Smartrecruiters keep the groups, queues, or projects in Lemlist assigned to the right people.
Where Lemlist routes or assigns work by person: assignments follow the org
When someone changes teams or managers in Smartrecruiters, the queues, ownership, or approvals in Lemlist update to match, so work reaches whoever holds the role now.
What you can sync between Lemlist and Smartrecruiters
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 | Smartrecruiters objects | How this pairing syncs | |
|---|---|---|---|
| Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. | Applications Links a Candidate to a Job and carries the current hiring status and source; created and advanced through statuses (screening, interview, offer, hired, rejected) via the Application API. | Unsubscribes is specific to Lemlist and Applications to Smartrecruiters — each maps to any object or custom field on the other side. | |
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | Jobs Requisitions (positions) with openings, departments, locations, and hiring team; created, patched, and read out for requisition and time-to-fill reporting via the Jobs API. | Webhooks is specific to Lemlist and Jobs to Smartrecruiters — each maps to any object or custom field on the other side. | |
| Team Members Sender and seat records map outreach activity to reps in other systems. | Job Postings Job ads and publications pushed to the career site and job boards; created and managed via the job publication endpoints (rate-limited to 2 requests/sec). | Team Members is specific to Lemlist and Job Postings to Smartrecruiters — each maps to any object or custom field on the other side. | |
| Campaigns Outreach campaigns are the container leads are pushed into from CRMs and list-building workflows. | Interviews Interview types, timeslots, templates, and scheduled interviews with interviewers and times; created, updated, and read for scheduling and interviewer-load analytics. | Campaigns is specific to Lemlist and Interviews to Smartrecruiters — each maps to any object or custom field on the other side. | |
| Leads Per-campaign prospect records sync in from enrichment sources and back out with status. | Offers Offer records tied to an Application with status, custom offer fields, and offer documents; readable and writable, commonly synced to an HRIS on hire (documents endpoint limited to 2 requests/sec). | Leads is specific to Lemlist and Offers to Smartrecruiters — each maps to any object or custom field on the other side. | |
| Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. | Users Company users (recruiters, hiring managers) with roles, access groups, and activation state; read and written via the User Management API. | Activities is specific to Lemlist and Users to Smartrecruiters — each maps to any object or custom field on the other side. |
How changes propagate between Lemlist and Smartrecruiters
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Lemlist Smartrecruiters Sub-second propagation
DetectionLemlist notifies Stacksync of record changes through webhook events. Webhooks on outreach activity events, plus polling.
DeliveryEach detected change is written to Smartrecruiters through its API, with automatic retries and rate-limit backoff.
Smartrecruiters Lemlist Sub-second propagation
DetectionSmartrecruiters notifies Stacksync of record changes through webhook events. Webhooks API — subscribe to events (new application, candidate updated, status changed) delivered with a signing secret and retrievable callback logs.
DeliveryEach detected change is written to Lemlist through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Lemlist: Subject to the platform's API rate limits.
- Smartrecruiters: Per API credential: most endpoints allow up to 10 requests/sec (job publication and offer documents 2/sec), plus a concurrency limiter of up to 8 simultaneous requests (GET /candidates capped at 1). Exceeding returns 429; responses carry X-RateLimit-Limit/Remaining and concurrent-limit headers.
What ships with Lemlist ⇄ Smartrecruiters
Connect Lemlist and Smartrecruiters for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–Smartrecruiters connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Lemlist or Smartrecruiters 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 Smartrecruiters record.
Observability
Monitoring
Track your Lemlist ⇄ Smartrecruiters 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 Smartrecruiters.
How the Lemlist and Smartrecruiters 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
Smartrecruiters
- Integration surface
- SmartRecruiters REST APIs (SmartAPIs) on api.smartrecruiters.com — Candidates, Application, Jobs, Interviews, Offers, Users, Approvals, plus a Webhooks API for event subscriptions
- Authentication
- X-SmartToken API key header for a customer's own integration (grants full company access, no scopes or expiry), or OAuth 2.0 authorization-code flow for partner and Marketplace apps with user-scoped permissions
- Change detection
- Webhooks API — subscribe to events (new application, candidate updated, status changed) delivered with a signing secret and retrievable callback logs; otherwise poll list endpoints with updated-after-style filters. No log-based change data capture.
- Capabilities
- read · write · webhooks
- Rate limits
- Per API credential: most endpoints allow up to 10 requests/sec (job publication and offer documents 2/sec), plus a concurrency limiter of up to 8 simultaneous requests (GET /candidates capped at 1). Exceeding returns 429; responses carry X-RateLimit-Limit/Remaining and concurrent-limit headers.
How it works
How to connect Lemlist to Smartrecruiters — 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 Lemlist and Smartrecruiters with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Lemlist
connected
Smartrecruiters
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Lemlist and Smartrecruiters 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 · Lemlist ⇄ SmartrecruitersCustomers 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.
Lemlist SmartrecruitersCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Lemlist and Smartrecruiters integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and Smartrecruiters: authenticate both systems, choose the objects to sync (such as Lemlist's Unsubscribes and Webhooks), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Lemlist and Smartrecruiters connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Lemlist–Smartrecruiters integration in-house.
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Yes — Stacksync ships production-grade connectors for both Lemlist and Smartrecruiters. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Lemlist: Webhooks on outreach activity events, plus polling. On Smartrecruiters: Webhooks API — subscribe to events (new application, candidate updated, status changed) delivered with a signing secret and retrievable callback logs; otherwise poll list endpoints with updated-after-style filters. No log-based change data capture. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
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On the Lemlist side: Unsubscribes, Webhooks, Team Members, Campaigns, plus custom fields where Lemlist exposes them. On the Smartrecruiters side: Approvals, Candidates, Applications, Jobs. 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.
SECURITY
Security teams trust 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
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
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