Can businesses enrich leads with accurate company and contact data?

Businesses can enhance lead records with accurate company insights and direct contact information.

Can Apollo.io Data API enrich leads with company and contact data?

Apollo.io Data API enriches leads with company and contact data including verified emails, phone numbers, and firmographic insights.

How can Apollo.io's Data API help sales teams access over 275 million contacts with detailed firmographic and technographic data for targeted prospecting?

Apollo.io’s Data API grants sales teams access to an extensive database of contacts with firmographic and technographic insights for precise prospecting.

How does this sales data API deliver contact information, company details, and prospecting insights?

The sales data API provides verified contact details, company profiles, and prospecting intelligence for outreach.

What B2B contact and company data access features does this API provide for sales teams?

The API offers B2B contact and company data access with verified emails, phone numbers, and firmographic attributes for targeted outreach.

Reviewed · Updated 2026-06-18

Apollo.io Data API

Offers sales intelligence and contact data API for lead generation.

Reviewed by the Conversion Gems editorial team · 2026-06-18

Try Apollo.io

Pricing

Freemium

Best for

Marketing professionals

Community ratings

4.8/ 5 aggregate · across 2 sources

4.85,300+ reviews

Trustpilot

4.4140+ reviews

Third-party ratings shown verbatim; aggregate weighted by review volume.

What it really is

Apollo.io Data API — B2B sales intelligence and contact data API for prospecting and enrichment.

Our take

Apollo.io is a sales intelligence and engagement platform with a REST API giving access to 210M+ B2B contacts and 35M+ companies. The DB listed $120/month and mislabeled it as a Facebook-scraping tool for social-media analysts — both are incorrect. Apollo is squarely a B2B sales prospecting platform with a legitimate free tier; paid API-enabled plans start at $49/mo (annual). The 'who_its_for' field in the catalogue is entirely wrong and should reference sales and marketing teams, not social-media analysts.

Why we rate it

Apollo combines one of the largest B2B contact databases with built-in sequencing, dialer, and CRM sync — making it a rare all-in-one for outbound teams. The API is well-documented with OAuth 2.0, people search, enrichment, and account endpoints.

The catch

Credit limits bite fast on the lower tiers; real-world costs often run 2–3× the base price once extra credits are purchased. Full API rate limits and bulk enrichment require Organization or custom plans.

Best for

B2B sales and RevOps teams building automated lead generation pipelines

Developers enriching CRM records with verified contact and firmographic data

Account-based marketing teams needing intent signals and technographic filters

Not good for

Consumer or B2C use cases — database is strictly B2B

Teams needing massive bulk exports on a budget (credit costs escalate quickly)

Social-media scraping or Facebook/Instagram engagement data (entirely different product category)

Friction report

Time to value

Fast: free account and API key in minutes; first people-search or enrichment call achievable same session.

Scale breakpoint

Credit exhaustion kicks in quickly at scale; Organization plan minimum of 3 seats and custom API agreements required for high-volume enrichment.

Walled garden

Moderate: data and sequences live in Apollo; CRM sync (Salesforce, HubSpot) and export APIs exist but workflow lock-in is real at higher usage.

A look inside

Frequently Asked Questions

Alternatives

Step up

ZoomInfo for enterprise-grade data compliance, wider intent signal coverage, and dedicated support SLAs.

Lighter alternative

Hunter.io or Clearbit Enrichment API for simpler, lower-volume contact lookup without the full engagement platform.

Ready to try Apollo.io Data API?

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