Apollo.io to Clearbit integration — real-time data sync

Yes. Stacksync provides a managed, real-time integration between Apollo.io and Clearbit — Clearbit is a read-only source, so data flows from it into the other system: authenticate both systems, choose the objects to sync, map fields visually, and changes propagate in milliseconds — no code required.

On the Apollo.io side: Sequences, Deals (Opportunities), Tasks and calls, Custom fields, plus custom fields where Apollo.io exposes them. On the Clearbit side: Name-to-domain lookups, Enrichment attributes, Companies, Persons. Stacksync auto-detects both schemas and converts types between the two systems.

Clearbit is a read-only source, so this integration runs one-way: Stacksync reads from Clearbit in real time and delivers into Apollo.io. Field mapping and monitoring work the same as for two-way pairs.

Common patterns for Apollo.io and Clearbit: Divisional or regional split; Where both track pipeline: deal visibility across systems; Post-acquisition consolidation. Where each CRM serves a different team or region, sync just the shared accounts and contacts so handoffs and cross-sell work.

Apollo.io: REST API. Authentication: API key (passed in request headers); master keys unlock account-wide endpoints. Clearbit: REST API (separate endpoints per product: Enrichment, Reveal). Authentication: API key (bearer secret key). Stacksync manages authentication, retries, and rate limits on both sides.

Apollo.io: Apollo distinguishes between people in its global database and contacts saved to your account; only saved contacts carry your custom fields and sequence history. Clearbit: Lookups can resolve asynchronously: the API may accept a request and deliver the completed record later via webhook, which sync logic must accommodate. Stacksync's field mapping accounts for these differences between Apollo.io and Clearbit without custom code.