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Business productivity

Connect Microsoft 365 to any app with two-way sync.

Two-way sync Microsoft 365 across all your CRMs, databases, data warehouses, EDI systems, and AI tools, with custom workflows tailored to your data.

  • 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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Object catalog

What Stacksync syncs in Microsoft 365.

These objects sync between Microsoft 365 and any connected system, with field-level mapping and conflict resolution. Custom fields are picked up from the live schema where Microsoft 365 exposes them.

Users
Entra ID user accounts synced with HR and identity systems.
Groups
Microsoft 365 and security groups kept aligned with org structure and access rules.
Mail Messages
Exchange Online messages read for logging, archiving, or activity capture.
Calendar Events
Events synced with scheduling tools and CRMs for meeting visibility.
Contacts
Personal and org contacts kept consistent with CRM contact records.
OneDrive Files (driveItems)
File and folder metadata synced for document workflows and audits.
SharePoint Sites & Lists
List items read and written like lightweight database tables.
Teams
Team and membership data provisioned from upstream systems.
Planner & To Do Tasks
Task items synced with project and work-management tools.
API surface

How Stacksync connects to Microsoft 365.

The connector runs on Microsoft 365's native API. Stacksync manages authentication, rate limits, retries, and schema changes so your team does not maintain integration code.

Connection
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

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Not available
  • Webhooks Supported
What ships with Microsoft 365

Connect Microsoft 365 for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every connection.

Real-time

Two-way sync

Changes in Microsoft 365 instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Microsoft 365 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 record.

Observability

Monitoring

Track your Microsoft 365 sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions.

Use cases

What teams run on the Microsoft 365 connector.

Microsoft 365 is purchased at the tenant level by IT and is the default productivity layer for most mid-market and enterprise organizations. Through Microsoft Graph it exposes the org's directory (Users, Groups), communications (Mail Messages, Calendar Events), and content (OneDrive Files, SharePoint Sites & Lists, Teams). That makes it a high-gravity source of identity and activity data that RevOps, security, and data teams need in other systems.

  • IT administrators
  • Data engineering
  • RevOps
  • Security / compliance

  1. Sync employee records from an HR system into Entra ID users and group memberships.

  2. Mirror calendar events into scheduling or CRM tools so meetings appear on customer timelines.

  3. Sync SharePoint lists with operational databases so business users edit in SharePoint while systems read SQL.

  4. Archive mail and file metadata into a warehouse for compliance and activity analytics.

  5. Keep CRM contacts and Microsoft 365 contacts aligned in both directions.

  6. Sync Users and Groups into a warehouse or downstream apps to drive provisioning audits, license reviews, and org reporting.

All Microsoft 365 integrations

Pick the system you need to keep in sync with Microsoft 365. Each page covers the sync setup, field mapping, and common workflows for that pair.

CRM · 41

ERP · 20

Database · 25

Data warehouse · 29

Business productivity · 32

Accounting and finance · 15

How it works

Set up Microsoft 365 in minutes, without APIs.

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.

  1. 01

    Connect your apps

    Authenticate Microsoft 365 with its native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Microsoft 365 connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Microsoft 365 objects to sync — Stacksync auto-detects the schema, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Microsoft 365
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Microsoft 365 database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

Microsoft 365 connector FAQ

What can I sync with the Microsoft 365 connector?

Microsoft 365's core objects — Users, Groups, Mail Messages, Calendar Events and custom fields — can sync with any of 302 other systems. Every integration is real-time and bidirectional, with field-level mapping and conflict resolution.

How does Stacksync connect to Microsoft 365?

Via REST API (Microsoft Graph), authenticated with OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions. Changes are detected as follows — graph change notifications (webhooks) plus delta queries for incremental sync. Stacksync manages rate limits, retries, and schema changes automatically.

Is the Microsoft 365 connector two-way?

Yes. Changes made in Microsoft 365 propagate to the connected system and vice versa, in milliseconds. One-way flows are also supported when a direction should stay read-only.

How long does a Microsoft 365 integration take to set up?

Most Microsoft 365 integrations go live in minutes: authenticate Microsoft 365 and the other system, pick objects and fields, and enable the sync. No code and no infrastructure to manage.

Is Microsoft 365 data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. Microsoft 365 data is encrypted in transit, and a zero-persistent-storage architecture means records are not retained after a sync operation.

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.

Learn more about security
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:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more
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