Apollo.io
B2B contact database with built-in email outreach and CRM tools
About
Apollo.io is the most widely adopted B2B sales intelligence and engagement platform, combining a database of 275+ million contacts with built-in email sequencing, dialling, and CRM capabilities. Sales teams use it as a single platform for prospecting, enriching leads, and running outbound campaigns — eliminating the need for separate tools like ZoomInfo and Outreach. Indian SaaS startups particularly use Apollo as their first sales stack because of its powerful free tier. Key Features: 275M+ contact and company database | AI-powered email sequence builder | Chrome extension for LinkedIn prospecting | Lead scoring and intent data | Built-in dialler for cold calling | CRM integration with HubSpot and Salesforce | Email deliverability tools Best For: SDRs, sales teams, and growth-stage startups building their first outbound motion. Pros: Best free tier in the sales intelligence market | All-in-one — data, outreach, and CRM in one tool | Easy to get started Cons: Data quality on Indian contacts is inconsistent | Interface can feel overwhelming | Email sending limits on lower tiers
Problem It Solves
Prospecting, lead sourcing, outbound email campaigns
Best For
SDRs, sales teams, growth startups