Apollo Migration Deep Dive

Current State

!npm list 2>/dev/null | head -10

Overview

Migrate contact and company data into Apollo.io from other CRMs (Salesforce, HubSpot) or CSV sources. Uses Apollo's Contacts API for creating/updating contacts and Bulk Create Contacts endpoint for high-throughput imports (up to 100 contacts per call). Covers field mapping, assessment, batch processing, reconciliation, and rollback.

Prerequisites

• Apollo master API key (Contacts API requires master key)
• Node.js 18+
• Source CRM export in CSV or JSON format

Instructions