# Apollo.io

> Sales intelligence and engagement platform.

Apollo.io unifies prospect data, outbound engagement, and workflow automation into a single platform. With a large contact and company database, intent signals, and multichannel sequencing, it is a cost-effective alternative to ZoomInfo plus Outreach for growth-stage cyber vendors.

- **Category:** [Marketing Tools](https://gracker.ai/cyber-resources/tools)
- **Website:** https://www.apollo.io
- **Location:** San Francisco, CA, USA
- **Founded:** 2015
- **Pricing:** freemium
- **Verified:** Yes
- **Last updated:** April 21, 2026

## Use Cases

- Outbound prospecting
- Contact enrichment
- Email sequencing
- ICP research
- ABM list building

## Frequently asked questions

### What is Apollo.io?

Apollo.io is a B2B sales intelligence and engagement platform combining a 275M+ contact database with email sequencing, dialer, and workflow automation. Cyber marketing and SDR teams use it for outbound, enrichment, and ICP research.

### What is Apollo.io used for?

Apollo.io is used for Outbound prospecting, Contact enrichment, Email sequencing, ICP research, ABM list building.

### Where is Apollo.io based?

Apollo.io is based in San Francisco, CA, USA.

### What is Apollo.io listed under on Cyber Resources?

Apollo.io is listed in the Marketing Tools category of Cyber Resources, the curated directory of the cybersecurity marketing and growth ecosystem.