Apollo.io
AI-powered B2B sales intelligence and engagement platform
About Apollo.io
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.
Pros & Cons
Pros
- Massive database of 275M+ contacts with 65+ advanced search filters for precise targeting
- All-in-one platform consolidates data provider, email outreach, dialer, and enrichment into a single tool
- Generous free plan with 10,000 email credits per month allows teams to validate the platform before committing
- Built-in email deliverability suite with warmup and spam testing eliminates the need for separate tools
- Powerful Chrome extension for real-time LinkedIn and web prospecting without leaving the browser
Cons
- Data accuracy can be inconsistent — users report real-world accuracy around 65-70% for some contact types
- Phone numbers cost 8 credits each and are often less reliable than email data
- LinkedIn automation is limited to task reminders only — actual actions must be performed manually
- Credit system is confusing with unpredictable consumption patterns
Key Features
B2B Contact Database
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.
Buying Intent Signals
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.
Multi-Channel Sequences
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.
AI Email Writer & Personalization
Generate personalized email copy, subject lines, and research-based talking points using AI that analyzes prospect profiles, company data, and recent activity.
Built-in Dialer
Cloud-based calling with US and international dialing, call recording, AI-generated call summaries, automatic transcription, and CRM sync for logged conversations.
Data Enrichment
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.
CRM Integration & Sync
Bi-directional syncing with Salesforce, HubSpot, and Pipedrive, plus native integrations with Outreach, SalesLoft, Marketo, and custom workflows via Zapier, Make, and REST API.
Email Deliverability Suite
Built-in email warmup, spam testing, and deliverability protection to maintain sender reputation and maximize inbox placement rates across outbound campaigns.
AI Lead Scoring
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.
Chrome Extension
Browser extension for LinkedIn and web prospecting that reveals contact details, enriches profiles, and adds leads directly to sequences without leaving the page.
Pricing
Featured In
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Best for teams that want a single platform for prospecting, outreach, and calling — especially startups and SMBs looking to maximize capability per dollar spent.
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Apollo's Chrome extension enriches LinkedIn profiles with verified emails and phone numbers, feeding data directly into its CRM — no Sales Navigator required.
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Best overall AiSDR alternative for teams that want a single platform with bigger data, broader CRM support, and 10x lower starting cost.
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Best for SMB and mid-market sales teams that want prospecting and outbound execution in one affordable, self-serve platform.