Apollo.io is a B2B sales intelligence and engagement platform founded in 2015 and headquartered in San Francisco. It combines a contact database of 210+ million records with outbound engagement tools — email sequencing, dialer, AI-assisted personalization — in one platform. Over 160,000 companies use Apollo across sales development, growth, and marketing teams.
Pricing uses four tiers per user per month on annual billing. Free: access to 100 email credits/month, basic filters, and 2 outreach sequences — useful for database validation but not for real prospecting volume. Basic at $49/user/month (annual, $59 monthly): 1,000 monthly credits, CRM sync with Salesforce and HubSpot, meeting scheduler, email open/click tracking. Professional at $79/user/month (annual, $99 monthly): full automation including unlimited sequences, A/B testing, US Auto Dialer for phone outreach, and advanced analytics. Organization at $119/user/month (annual, $149 monthly): minimum 3 users, adds International Dialer, call recordings with AI insights, custom reporting, advanced security controls, and SSO.
The credit system is the defining cost driver beyond the subscription price. Email lookups cost 1 credit each; mobile phone number lookups cost 8 credits each. A rep making 25 calls per day burns through the Professional plan’s 100 monthly mobile credits in four working days, forcing overage purchases at $0.20 per credit with a 250-credit minimum ($50). Credits expire at month-end with no rollover. A March 2025 incident: LinkedIn removed Apollo’s official company pages for data scraping policy violations — teams relying on LinkedIn data synchronization should factor this into their evaluation.
Apollo’s data accuracy hovers around 65–70% email accuracy based on user reviews, with bounce rates of 15–25% reported across G2 and Trustpilot — significantly above the industry best-practice threshold of under 5%. Most active teams supplement Apollo with a third-party email verification tool at $50–$200/month. Annual contracts auto-renew and require 60 days written notice before renewal to cancel — a common complaint in user reviews.