Real-time
Two-way sync
Changes in Microsoft 365 or Smartsheet instantly reflect in both systems. No stale data, no manual imports.
Business productivity
Microsoft 365 to Smartsheet integration — real-time, two-way sync
Keep Microsoft 365 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 Microsoft 365 and Smartsheet
Stop re-entering the same information in Microsoft 365 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 Groups, Mail Messages, Calendar Events, Contacts in Microsoft 365 with Discussions and Comments, Users and Groups, Sheets, Rows 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 Sync employee records from an HR system into Entra ID users and group memberships.
- 02 Mirror calendar events into scheduling or CRM tools so meetings appear on customer timelines.
- 03 Pull Reports and Sheets into a warehouse for cross-project reporting and dashboards without manual CSV exports.
- 04 Mirror Users and Groups from an HR system or directory so sheet sharing and workspace access stay aligned with headcount changes.
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 Microsoft 365 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.
| Microsoft 365 objects | Smartsheet objects | How this pairing syncs | |
|---|---|---|---|
| Users Entra ID user accounts synced with HR and identity systems. | Rows Records inside a sheet, each with createdAt/modifiedAt and cells keyed by columnId; the primary unit synced to and from external tables. | Users is specific to Microsoft 365 and Rows to Smartsheet — each maps to any object or custom field on the other side. | |
| Groups Microsoft 365 and security groups kept aligned with org structure and access rules. | Columns Define sheet schema and cell type (TEXT_NUMBER, DATE, CONTACT_LIST, PICKLIST, CHECKBOX); read via the API so field mappings can be generated. | Groups is specific to Microsoft 365 and Columns to Smartsheet — each maps to any object or custom field on the other side. | |
| Mail Messages Exchange Online messages read for logging, archiving, or activity capture. | Cells Row-by-column values; writes must match the column type and no single cell can exceed 4,000 characters. | Mail Messages is specific to Microsoft 365 and Cells to Smartsheet — each maps to any object or custom field on the other side. | |
| Calendar Events Events synced with scheduling tools and CRMs for meeting visibility. | Reports Read-only roll-ups spanning multiple sheets; pulled into a warehouse for cross-sheet reporting, capped at 50,000 rows. | Calendar Events is specific to Microsoft 365 and Reports to Smartsheet — each maps to any object or custom field on the other side. | |
| Contacts Personal and org contacts kept consistent with CRM contact records. | Attachments Files linked to rows or sheets; posting one carries a 10x rate cost, so bulk file sync is throttled to 30 per minute. | Contacts is specific to Microsoft 365 and Attachments to Smartsheet — each maps to any object or custom field on the other side. | |
| OneDrive Files (driveItems) File and folder metadata synced for document workflows and audits. | Discussions and Comments Threaded comments on rows and sheets; read out to sync collaboration history or activity into another system. | OneDrive Files (driveItems) is specific to Microsoft 365 and Discussions and Comments to Smartsheet — each maps to any object or custom field on the other side. |
How changes propagate between Microsoft 365 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.
Microsoft 365 Smartsheet Sub-second propagation
DetectionMicrosoft 365 notifies Stacksync of record changes through webhook events. Graph change notifications (webhooks) plus delta queries for incremental sync.
DeliveryEach detected change is written to Smartsheet through its API, with automatic retries and rate-limit backoff.
Smartsheet Microsoft 365 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 Microsoft 365 through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- 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 Microsoft 365 ⇄ Smartsheet
Connect Microsoft 365 and Smartsheet for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Microsoft 365–Smartsheet connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Microsoft 365 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 Microsoft 365 or Smartsheet record.
Observability
Monitoring
Track your Microsoft 365 ⇄ Smartsheet sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Microsoft 365 and Smartsheet.
How the Microsoft 365 and Smartsheet connectors work
Microsoft 365
- Integration surface
- REST API (Microsoft Graph)
- Authentication
- OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions
- Change detection
- Graph change notifications (webhooks) plus delta queries for incremental sync
- Capabilities
- read · write · webhooks
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 Microsoft 365 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 Microsoft 365 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.
Microsoft 365
connected
Smartsheet
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Microsoft 365 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 · Microsoft 365 ⇄ 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.
Microsoft 365 SmartsheetCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Microsoft 365 and Smartsheet integration FAQ
-
Yes. Stacksync provides a managed, real-time two-way integration between Microsoft 365 and Smartsheet: authenticate both systems, choose the objects to sync (such as Microsoft 365's Users and Groups), map fields visually, and changes propagate both ways in milliseconds — no code required.
-
Microsoft 365: REST API (Microsoft Graph). Authentication: OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions. 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.
-
Microsoft 365: Nearly all Microsoft 365 workloads (Exchange, SharePoint, OneDrive, Teams, Entra ID) are exposed through the single Microsoft Graph endpoint rather than per-product APIs. Smartsheet: Row add and update calls are limited to 500 rows per request, so large syncs are chunked. Stacksync's field mapping accounts for these differences between Microsoft 365 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 Microsoft 365 and Smartsheet records are not retained after a sync operation.
-
Stacksync pricing is usage-based and starts at $1,000/month, including the managed Microsoft 365 and Smartsheet connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Microsoft 365–Smartsheet integration in-house.
-
Yes — Stacksync ships production-grade connectors for both Microsoft 365 and Smartsheet. 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
Every pair below is a real-time, two-way sync. Search all 460 integrations available for Microsoft 365 and Smartsheet.
Popular · 7 of 460
-
Microsoft 365 ⇄ Agiloft -
Microsoft 365 ⇄ Gainsight -
Microsoft 365 ⇄ Ironclad -
Smartsheet ⇄ BetterContact - Smartsheet ⇄ Agiloft
- Smartsheet ⇄ Gainsight
- Smartsheet ⇄ Ironclad
No integrations match .
