Starting Price
Free tier available; paid from ~$49/user/mo
~$15,000+/yr (contract required, no public pricing)
Contact Database Size
275M+ contacts
300M+ contacts
Email Accuracy
~80-85% verified (community-sourced + AI)
~85-90% verified (proprietary crawling)
Built-in Sequencing
Yes — full email/call sequences included
Yes — via ZoomInfo Engage (add-on cost)
Buyer Intent Data
Basic intent signals on higher tiers
Advanced intent via Streaming Intent (included in enterprise)
Free Tier
Yes — 50 email credits/mo, limited exports
No — demo only, annual contract required
CRM Integrations
Salesforce, HubSpot, Pipedrive, and more
Salesforce, HubSpot, MS Dynamics, Marketo, and more
Chrome Extension
Yes — works on LinkedIn & company sites
Yes — robust LinkedIn + website enrichment
GDPR/CCPA Compliance Tools
Basic compliance; improving
Enterprise-grade compliance suite
Setup Time
Under 30 minutes to first prospect list
Days to weeks (onboarding + contract negotiation)
Technographics
Available on paid plans
Deep technographics + install data
Dialer / Calling
Built-in power dialer (paid plans)
Built-in dialer via Engage add-on
Worth knowing
- Apollo.io raised $100M in 2023 and has been on a feature sprint ever since — it's closing the gap fast.
- ZoomInfo went public in 2020 at a $8.9B valuation, making it one of the biggest SaaS IPOs of that year.
- Apollo's free plan is genuinely useful — rare in this category, where most free tiers are basically a demo with a login.
- ZoomInfo's pricing is notoriously opaque; most teams report paying $20K–$50K+/yr once add-ons are bundled.
- Apollo's database is partially community-sourced, meaning users contribute data — which keeps it fresh but occasionally noisy.
ZoomInfo acquired so many companies (Chorus.ai, Insent, RingLead, etc.) that their own sales reps sometimes aren't sure which product does what — at least according to Reddit.
If you wantYou're a startup or SMB who wants outbound NOW without a procurement process
Apollo's free tier and $49/mo entry point let you build sequences and hit send before ZoomInfo even returns your demo request.
→ Pick Apollo.io If you wantYou're an enterprise team where data accuracy and compliance are non-negotiable
ZoomInfo's data quality, intent signals, and compliance infrastructure are genuinely best-in-class at scale.
→ Pick ZoomInfo If you wantYou want an all-in-one prospecting + sequencing tool without paying for extra seats
Apollo bundles sequences, dialer, and enrichment in one platform — ZoomInfo charges add-on fees for equivalent functionality.
→ Pick Apollo.io If you wantYou need deep technographic or firmographic data for account-based selling
ZoomInfo's technographic depth and buying committee mapping are significantly richer than Apollo's current offering.
→ Pick ZoomInfo Some links on this page are affiliate links. If you sign up through them, we may earn a commission at no extra cost to you.