Freshworks CRM to Klaviyo integration — real-time, two-way sync

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

On the Klaviyo side: Profiles, Lists, Segments, Events, plus custom fields where Klaviyo exposes them. On the Freshworks CRM side: Sales activities, Lists, Notes, Contacts. 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 Freshworks CRM and Klaviyo: Where Klaviyo processes payments; Where Klaviyo can store CRM context: fields kept current; Where Klaviyo runs outreach. Charges, refunds, and subscription changes appear on the account in Freshworks CRM, so revenue context lives with the relationship.

Freshworks CRM: REST API. Authentication: API key sent as a Token authorization header. Klaviyo: REST API compliant with the JSON:API specification. Authentication: OAuth 2.0 for apps or private API keys. Stacksync manages authentication, retries, and rate limits on both sides.

Klaviyo: Profiles accept arbitrary custom properties, and events are append-only records tied to named metrics, which together form the segmentation model external data is synced into. Freshworks CRM: Contacts and accounts expose lifecycle stages and custom fields through the API, so one record serves both sales and marketing workflows. Stacksync's field mapping accounts for these differences between Freshworks CRM and Klaviyo without custom code.