Real-time
Two-way sync
Changes in Lemlist or Smartsheet instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Lemlist to Smartsheet integration — real-time, two-way sync
Keep Lemlist and Smartsheet 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 Lemlist and Smartsheet
Stop re-entering the same information in Lemlist and Smartsheet: 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 Webhooks, Team Members, Campaigns, Leads in Lemlist with Rows, Columns, Cells, Reports in Smartsheet 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 Propagate unsubscribes and bounces back to the CRM and other outreach tools for suppression compliance
- 02 Stop or pause sequences automatically when a reply converts to a deal in the CRM
- 03 Write records from a CRM or ERP into Smartsheet Rows so ops teams manage intake and status in a grid, then push status Cells back to the source.
- 04 Pull Reports and Sheets into a warehouse for cross-project reporting and dashboards without manual CSV exports.
Common sync patterns
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.
Where Smartsheet is where the team documents or plans: keep its data fed
Information that originates in Lemlist stays current in Smartsheet instead of going stale after a one-time paste.
What you can sync between Lemlist and Smartsheet
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 | Smartsheet objects | How this pairing syncs | |
|---|---|---|---|
| Activities Engagement records such as opens, clicks, replies, and bounces sync to CRM timelines. | Cells Row-by-column values; writes must match the column type and no single cell can exceed 4,000 characters. | Activities is specific to Lemlist and Cells to Smartsheet — 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. | Reports Read-only roll-ups spanning multiple sheets; pulled into a warehouse for cross-sheet reporting, capped at 50,000 rows. | Unsubscribes is specific to Lemlist and Reports to Smartsheet — each maps to any object or custom field on the other side. | |
| Webhooks Hook subscriptions define which activity events are pushed to external endpoints. | Attachments Files linked to rows or sheets; posting one carries a 10x rate cost, so bulk file sync is throttled to 30 per minute. | Webhooks is specific to Lemlist and Attachments to Smartsheet — 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. | Discussions and Comments Threaded comments on rows and sheets; read out to sync collaboration history or activity into another system. | Team Members is specific to Lemlist and Discussions and Comments to Smartsheet — 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 and Groups Account membership and sharing; synced to keep an HR or identity source aligned with sheet and workspace access. | Campaigns is specific to Lemlist and Users and Groups to Smartsheet — 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. | Sheets The core container; each sheet has typed columns, rows, and a modifiedAt stamp. Stacksync treats a sheet as a table and syncs its rows two-way. | Leads is specific to Lemlist and Sheets to Smartsheet — each maps to any object or custom field on the other side. |
How changes propagate between Lemlist and Smartsheet
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 Smartsheet 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 Smartsheet through its API, with automatic retries and rate-limit backoff.
Smartsheet Lemlist Sub-second propagation
DetectionSmartsheet notifies Stacksync of record changes through webhook events. Sheet-scoped webhooks subscribed to *.* events notify on row and cell changes.
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.
- Smartsheet: 300 requests per minute per access token; heavy calls like posting attachments cost 10x (30/min). A 429 returns errorCode 4003, back off ~60s.
What ships with Lemlist ⇄ Smartsheet
Connect Lemlist and Smartsheet for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Lemlist–Smartsheet connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Lemlist or Smartsheet 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 Smartsheet record.
Observability
Monitoring
Track your Lemlist ⇄ Smartsheet 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 Smartsheet.
How the Lemlist and Smartsheet 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
Smartsheet
- Integration surface
- REST API (v2.0)
- Authentication
- OAuth 2.0 authorization-code flow, or a raw/personal API access token passed as a Bearer header
- Change detection
- Sheet-scoped webhooks subscribed to *.* events notify on row and cell changes; otherwise polling on sheet and row modifiedAt timestamps
- Capabilities
- read · write · webhooks
- Rate limits
- 300 requests per minute per access token; heavy calls like posting attachments cost 10x (30/min). A 429 returns errorCode 4003, back off ~60s.
How it works
How to connect Lemlist to Smartsheet — 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 Smartsheet 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
Smartsheet
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Lemlist and Smartsheet 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 ⇄ SmartsheetCustomers 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 SmartsheetCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Lemlist and Smartsheet integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Lemlist and Smartsheet: authenticate both systems, choose the objects to sync (such as Lemlist's Activities and Unsubscribes), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
Common patterns for Lemlist and Smartsheet: Where both tools track people or companies: one consistent record; Where one tool produces events: mirror them in the other; Where Smartsheet is where the team documents or plans: keep its data fed. Contact and company details corrected in either tool update the other, so nobody works from the old version.
-
Lemlist: REST API. Authentication: API key. Smartsheet: REST API (v2.0). Authentication: OAuth 2.0 authorization-code flow, or a raw/personal API access token passed as a Bearer header. Stacksync manages authentication, retries, and rate limits on both sides.
-
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. Smartsheet: A sheet is capped at 500,000 cells (rows multiplied by columns), and no single cell can hold more than 4,000 characters. Stacksync's field mapping accounts for these differences between Lemlist and Smartsheet without custom code.
-
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 Smartsheet records are not retained after a sync operation.
-
Stacksync pricing is usage-based and starts at $1,000/month, including the managed Lemlist and Smartsheet connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Lemlist–Smartsheet integration in-house.
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
Every pair below is a real-time, two-way sync. Search all 396 integrations available for Lemlist and Smartsheet.
Popular · 6 of 396
-
Lemlist ⇄ Resend -
Lemlist ⇄ Slack -
Smartsheet ⇄ BetterContact -
Smartsheet ⇄ Agiloft -
Smartsheet ⇄ Gainsight -
Smartsheet ⇄ Ironclad
No integrations match .
