| Overview |
Apollo.io is an all-in-one sales intelligence and engagement platform with a database of over 275 million contacts. It combines prospecting, enrichment, and outreach automation in a single workflow. |
High-performance open-source vector search engine with filtering, payload indexing, and distributed deployment support. |
| Pricing |
Freemium ($0-99/mo) |
Freemium (Free-$$$) |
| Key Features |
- Contact database
- email sequencing
- dialer
- LinkedIn integration
- buying intent signals
- data enrichment
- CRM sync
- lead scoring
|
- Open-source
- Filtering
- Payload indexing
- Distributed
- Quantization
- Snapshot
- Multitenancy
|
| Pros |
- Massive contact database
- Generous free tier
- All-in-one platform
- Good data accuracy
|
- Fast performance
- Open-source
- Rich filtering
- Good documentation
|
| Cons |
- Data can be outdated for smaller companies
- UI can feel cluttered
- Email deliverability issues at scale
|
- Newer ecosystem
- Smaller community
- Self-hosting complexity
|
