ZoomInfo vs Apollo.io

Side-by-side comparison to help you choose the best tool.

ZoomInfo

paid

4.5 / 5.0

ZoomInfo is a complete B2B data and intelligence platform that provides AI contact and company enrichment, buying intent signals, and go-to-market automation for enterprise sales and marketing teams. Its vast database of verified business contacts enables precise prospecting, while intent data helps teams identify accounts actively researching relevant tools. ZoomInfo's AI features simplify list building, CRM enrichment, and outreach personalisation.

Best for: Enterprise B2B sales and marketing teams that need accurate contact data, intent signals, and go-to-market automation.

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Apollo.io

freemium

4.5 / 5.0

Apollo.io is a sales intelligence and engagement platform with a database of 275M+ contacts and 73M+ companies. Its AI features include AI prospect scoring, AI email generation at scale, and automated sequence triggers based on buying signals. Apollo combines prospecting, engagement, and analytics in one platform at a price point accessible to startups and SMBs - making it the most popular sales prospecting tool.

Best for: Sales teams at startups and SMBs wanting an all-in-one prospecting, email outreach, and engagement platform at an accessible price

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Feature Comparison

Feature	ZoomInfo	Apollo.io
Pricing	paid	freemium
Category	-	-
Rating	★★★★½ 4.5	★★★★½ 4.5
Best For	Enterprise B2B sales and marketing teams that need accurate contact data, intent signals, and go-to-market automation.	Sales teams at startups and SMBs wanting an all-in-one prospecting, email outreach, and engagement platform at an accessible price
Views	37	36

Pros & Cons — ZoomInfo

Pros

Industry-leading database size and data accuracy
Powerful intent data to prioritise in-market accounts
Extensive integrations with CRM and sales tools

Cons

Significant cost, often requiring annual enterprise contracts
Data accuracy can vary for smaller companies and international markets

Pros & Cons — Apollo.io

Pros

Best value sales intelligence + engagement combo
AI email personalisation at scale
Free tier gives meaningful access to prospecting

Cons

Data quality can vary for niche industries
Email deliverability issues if list hygiene not maintained

Key Features — ZoomInfo

AI-powered B2B contact and company data
Buyer intent signals and account scoring
Sales automation and workflow triggers
CRM enrichment and data hygiene
Technographic and firmographic filters

Key Features — Apollo.io

275M+ contact & company database
AI email generation & personalisation
Automated outreach sequences
Intent data & buying signals
CRM integration

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