
AI-powered B2B sales intelligence and engagement platform
Apollo.io is a comprehensive B2B sales intelligence and engagement platform that combines a database of over 275 million contacts and 30 million companies with AI-powered outreach automation, a built-in dialer, and CRM integrations. It replaces multiple standalone tools — data providers, email outreach platforms, dialers, and enrichment services — enabling sales teams to prospect, engage, and close deals from a single platform.
Access 275M+ verified contacts and 30M+ companies with 65+ advanced filters including job title, industry, company size, revenue, funding stage, technologies used, and job changes.
Track up to 12 behavioral intent topics to identify prospects actively researching solutions, allowing teams to prioritize high-intent leads and time outreach for maximum impact.
Build automated outreach sequences combining emails, LinkedIn tasks, phone calls, and follow-ups with a drag-and-drop builder, conditional logic, and A/B testing for message variants.
Generate personalized email copy, subject lines, and research-based talking points using AI that analyzes prospect profiles, company data, and recent activity.
Cloud-based calling with US and international dialing, call recording, AI-generated call summaries, automatic transcription, and CRM sync for logged conversations.
Enrich contacts and accounts with verified emails and phone numbers using a waterfall approach across multiple data sources, with email verification scoring to filter risky addresses.
Bi-directional syncing with Salesforce, HubSpot, and Pipedrive, plus native integrations with Outreach, SalesLoft, Marketo, and custom workflows via Zapier, Make, and REST API.
Built-in email warmup, spam testing, and deliverability protection to maintain sender reputation and maximize inbox placement rates across outbound campaigns.
Machine learning-based lead scoring that predicts conversion likelihood by analyzing prospect behavior, engagement patterns, and fit signals to help teams focus on the best opportunities.
Browser extension for LinkedIn and web prospecting that reveals contact details, enriches profiles, and adds leads directly to sequences without leaving the page.