Real-time
Two-way sync
Changes in Lemlist or Monday instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Lemlist to Monday integration — real-time, two-way sync
Keep Lemlist and Monday 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 Fivetran
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Migrated from Celigo
Why teams connect Lemlist and Monday
Stop re-entering the same information in Lemlist and Monday: 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 Campaigns, Leads, Activities, Unsubscribes in Lemlist with Users, Workspaces, Boards, Items in Monday 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
- 01 Sync replies, opens, and bounces from Lemlist into the CRM so outbound activity shows on lead and contact records
- 02 Push enriched leads from a warehouse or list-building workflow into Lemlist campaigns automatically
- 03 Two-way sync of Items and their Column values between a monday.com board and Postgres so ops teams work in SQL while project owners stay in monday.com.
- 04 Write closed deals or provisioning records from a CRM or ERP into monday.com Items to kick off delivery and onboarding boards.
Common sync patterns
Handoffs between teams
When work started in one tool continues in the other, the shared fields travel with it automatically.
Where both tools track people or companies: one consistent record
Contact and company details corrected in either tool update the other, so nobody works from the old version.
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.
What you can sync between Lemlist and Monday
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 | Monday objects | How this pairing syncs | |
|---|---|---|---|
| Team Members Sender and seat records map outreach activity to reps in other systems. | Updates Comment and activity threads attached to items; read out into a database for reporting or written back as notes. | Team Members is specific to Lemlist and Updates to Monday — 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. | Users Account members referenced by people columns; read to resolve owner and assignee IDs to names and emails. | Campaigns is specific to Lemlist and Users to Monday — 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. | Workspaces Top-level containers that hold boards; used to scope which boards a given sync covers. | Leads is specific to Lemlist and Workspaces to Monday — 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. | Boards Table-like containers that hold items; each board maps to a synced table, and its columns define the field mapping. | Activities is specific to Lemlist and Boards to Monday — each maps to any object or custom field on the other side. | |
| Unsubscribes Opt-out records propagate to other outreach tools and the CRM for compliance. | Items Rows within a board and the primary record; synced two-way and created, updated, archived, or deleted via GraphQL mutations. | Unsubscribes is specific to Lemlist and Items to Monday — each maps to any object or custom field on the other side. | |
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | Subitems Nested rows under items, stored on a separate hidden board; synced as a child table linked to the parent item. | Webhooks is specific to Lemlist and Subitems to Monday — each maps to any object or custom field on the other side. |
How changes propagate between Lemlist and Monday
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 Monday 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 Monday through its API, with automatic retries and rate-limit backoff.
Monday Lemlist Sub-second propagation
DetectionMonday notifies Stacksync of record changes through webhook events. Board-scoped webhooks (create_item, change_column_value, item_deleted, and similar) for real-time events.
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.
- Monday: Complexity-budget limits: a single query caps at 5M complexity points and ~10M points/min per user token (1M on trial/free) over a sliding 60s window.
What ships with Lemlist ⇄ Monday
Connect Lemlist and Monday for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–Monday connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Lemlist or Monday 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 Monday record.
Observability
Monitoring
Track your Lemlist ⇄ Monday 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 Monday.
How the Lemlist and Monday 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
Monday
- Integration surface
- GraphQL API (single endpoint, api.monday.com/v2)
- Authentication
- OAuth 2.0 for installed apps, or a per-user personal API token (admin/member scope); a date-based API version is sent via request header
- Change detection
- Board-scoped webhooks (create_item, change_column_value, item_deleted, and similar) for real-time events; polling falls back to the item updated_at field
- Capabilities
- read · write · webhooks
- Rate limits
- Complexity-budget limits: a single query caps at 5M complexity points and ~10M points/min per user token (1M on trial/free) over a sliding 60s window
How it works
How to connect Lemlist to Monday — 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 Monday 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
Monday
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Lemlist and Monday 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 ⇄ MondayCustomers 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 MondayCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Lemlist and Monday integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and Monday: authenticate both systems, choose the objects to sync (such as Lemlist's Team Members and Campaigns), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Lemlist: REST API. Authentication: API key. Monday: GraphQL API (single endpoint, api.monday.com/v2). Authentication: OAuth 2.0 for installed apps, or a per-user personal API token (admin/member scope); a date-based API version is sent via request header. Stacksync manages authentication, retries, and rate limits on both sides.
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Lemlist: Lemlist's data model attaches leads to campaigns, so cross-campaign views of a prospect are assembled by the consuming system rather than provided natively, which makes CRM sync the practical system of record. Monday: Column values are polymorphic JSON that differ by column type; writes must send correctly shaped values, typically batched via change_multiple_column_values. Stacksync's field mapping accounts for these differences between Lemlist and Monday without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Lemlist and Monday records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Lemlist and Monday connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Lemlist–Monday integration in-house.
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Yes — Stacksync ships production-grade connectors for both Lemlist and Monday. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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
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
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