Freshsales to Microsoft 365 integration — real-time, two-way sync

Yes. Stacksync provides a managed, real-time two-way integration between Freshsales and Microsoft 365: authenticate both systems, choose the objects to sync (such as Freshsales's Notes and Sales activities), map fields visually, and changes propagate both ways in milliseconds — no code required.

Change detection on Freshsales: Polling with updated-at filters through views; outbound webhooks can be configured via workflow automations. On Microsoft 365: Graph change notifications (webhooks) plus delta queries for incremental sync. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.

On the Microsoft 365 side: Calendar Events, Contacts, OneDrive Files (driveItems), SharePoint Sites & Lists, plus custom fields where Microsoft 365 exposes them. On the Freshsales side: Appointments, Notes, Sales activities, Products. Stacksync auto-detects both schemas and converts types between the two systems.

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.

Common patterns for Freshsales and Microsoft 365: Where Microsoft 365 supplies contact or company data; Where Microsoft 365 processes payments; Where Microsoft 365 can store CRM context: fields kept current. Enriched fields land directly on records in Freshsales, and refreshes keep them from going stale.

Freshsales: REST API. Authentication: API key sent as a Token authorization header. Microsoft 365: REST API (Microsoft Graph). Authentication: OAuth 2.0 via Microsoft Entra ID, with delegated or application permissions. Stacksync manages authentication, retries, and rate limits on both sides.