Apollo.io: what it does, who it is for and alternatives

Updated October 20, 2026 · By Robert Breen

A B2B contact database with sequencing and AI research for prospecting. Find leads and email them from one place.

Official site: apollo.io

What Apollo.io does

Apollo lets you search a database of 240M+ contacts and 30M+ companies to build lead lists, then enrich records so they are more complete. Its AI agents can research accounts, write outreach, follow up and book meetings. A parallel dialer handles calls, and deliverability tools such as domain warming keep emails out of spam. It also works inside your CRM, Gmail and browser.

Who Apollo.io is for

• Sales reps
• Sales development reps
• Recruiters
• Marketers

Key features

• B2B database of 240M+ contacts and 30M+ accounts
• AI agents that research accounts, write outreach and book meetings
• Waterfall enrichment for more complete records
• Parallel dialer for calling
• Deliverability tools: domain warming, inbox rotation, reputation monitoring
• Chrome extension and 200+ integrations

Privacy and data

States SOC 2 Type II and ISO 27001 certifications and lists GDPR and CCPA compliance; people can opt out and have their profile removed through its Privacy Center. Source: Apollo.io’s own page. Before you put client data in, check your company’s AI rules and the plan’s data settings.

Learn Apollo.io free on Stepthrough

• Glossary: Apollo.io

Alternatives to Apollo.io

Other AI sales and CRM tools in the directory. For a fuller comparison, see Apollo.io alternatives.

• Lusha Free plan
  Best for: B2B contact and company data with a Chrome extension and CRM sync. B2B contact and company data for prospecting, with a browser extension and CRM sync.
• Clay Free plan
  Best for: Enriching lead lists from 150+ data sources with AI research. Enrich lead lists from 150+ data sources and research accounts with AI agents. Builds highly personalized outreach.
• Seamless.AI Free plan
  Best for: Real-time email and phone lookup from LinkedIn. Finds verified emails and phone numbers for prospects in real time. Chrome extension for LinkedIn.
• Snov.io Free plan
  Best for: Email finding, verification and email plus LinkedIn campaigns. Finds leads, enriches them with verified emails and phone numbers and automates cold email and LinkedIn campaigns. Has a free plan that renews monthly with a small credit allowance.
• Hunter Free plan
  Best for: Finding and verifying work emails for a company. Find and verify professional email addresses for a company or person. Includes simple cold-email campaigns.
• Kylon Free trial
  Best for: AI agents that research accounts and draft outreach for review. A shared workspace where your team and AI agents work on company tasks together, such as researching accounts and drafting outreach, with people approving the drafts before anything goes out.

All 34 AI sales and CRM tools

Frequently asked questions

What is Apollo.io?

A B2B contact database with sequencing and AI research for prospecting. Find leads and email them from one place. Apollo lets you search a database of 240M+ contacts and 30M+ companies to build lead lists, then enrich records so they are more complete. Its AI agents can research accounts, write outreach, follow up and book meetings. A parallel dialer handles calls, and deliverability tools such as domain warming keep emails out of spam. It also works inside your CRM, Gmail and browser.

Who is Apollo.io for?

Apollo.io fits sales reps, sales development reps, recruiters and marketers, and other office teams with the same job to do.

Is Apollo.io free?

Apollo.io has a free plan; paid plans add more usage or features. Plans change often, so check the official pricing page before you commit.

What are some alternatives to Apollo.io?

Other AI sales and CRM tools include Lusha, Clay, Seamless.AI, Snov.io and Hunter.

Is Apollo.io safe for work data?

States SOC 2 Type II and ISO 27001 certifications and lists GDPR and CCPA compliance; people can opt out and have their profile removed through its Privacy Center. Check your own company’s rules, and use a business plan with training turned off for client data.

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Checked against Apollo.io’s official site on October 20, 2026: source 1, source 2. Spotted something out of date? Email rbreen@ynteractive.com. Listings are free; submit your AI tool.

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