Apollo.io

FeaturedFreemium

The all-in-one prospecting and sales engagement platform with 275M contacts

About Apollo.io

Apollo.io has rapidly become the most popular sales engagement platform for SMBs and scale-ups by combining a massive B2B contact database (275M+ contacts, 60M+ companies) with a full sequence engine, dialer, and CRM in one freemium platform. The combination is rare: most competitors force you to buy a data provider (ZoomInfo, Clearbit) separately from your engagement tool (Outreach, Reply.io). Apollo's free plan includes 50 email credits/month and full sequence access. Paid plans start at $49/user/month. The data quality is good but not as accurate as ZoomInfo on mobile numbers. The sequence engine is robust with multi-channel support (email, call, LinkedIn). Apollo is the best bang-for-buck option for growth-stage startups and SMBs who need both data and engagement without a five-figure contract.

What's Great

✓275M+ B2B contacts + full sequence engine in one freemium platform — rare combination
✓Free plan gives 50 email credits/month — enough to test and evaluate the data quality
✓Competitive pricing at $49/user/month vs. ZoomInfo ($15,000+/year) + Outreach ($150/user)
✓AI email personalization generates custom openers using prospect's LinkedIn and company data
✓Native CRM with deals, pipeline, and activity tracking — no Salesforce required

Watch Out For

!Data quality on mobile/direct-dial phone numbers lags behind ZoomInfo
!Sequence automation less sophisticated than Outreach for enterprise workflows
!Contact database not as fresh as dedicated enrichment tools for niche verticals
!Free plan limits create friction as teams scale

Common Use Cases

A growth-stage startup uses Apollo to find 1,000 VP-level contacts at Series A SaaS companies, enroll them in a 7-step sequence, and track opens/replies — all without Salesforce or ZoomInfo

An SDR uses Apollo's AI email writer to generate personalized first lines referencing each prospect's recent LinkedIn post, improving reply rates by 40%

A sales team exports Apollo contacts with verified emails into their Salesforce CRM for enrichment without paying for a separate data tool

A solo founder identifies 200 ideal customer profile companies using Apollo's advanced filters (funding stage, headcount, tech stack) in 30 minutes