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

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

On the Microsoft 365 side: Planner & To Do Tasks, Users, Groups, Mail Messages, plus custom fields where Microsoft 365 exposes them. On the Affinity side: Notes, Interactions, Reminders, Lists. 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 Affinity and Microsoft 365: Where Microsoft 365 processes payments; Where Microsoft 365 can store CRM context: fields kept current; Where Microsoft 365 supplies contact or company data. Charges, refunds, and subscription changes appear on the account in Affinity, so revenue context lives with the relationship.

Affinity: REST API. Authentication: API key. 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.

Microsoft 365: Access is scoped per permission via Entra ID admin consent, so an integration only sees the workloads it was granted. Affinity: Affinity captures email and calendar interactions automatically, so much of its activity data is generated rather than manually entered. Stacksync's field mapping accounts for these differences between Affinity and Microsoft 365 without custom code.