Apollo.io
All-in-one B2B sales intelligence and engagement platform with 210M+ contacts
Founded
2015
Starting Price
$0
Category
Sales & CRM
Last updated April 27, 2026
About Apollo.io
Apollo.io is an all-in-one B2B sales intelligence and engagement platform that helps sales teams discover leads, automate outreach, and close deals faster. With a database of over 210 million verified contacts across 30 million companies, Apollo combines prospecting, data enrichment, email sequencing, and sales automation in a single platform. The platform uses AI to streamline the entire sales workflow — from finding ideal prospects with advanced filtering to automating multi-touch email sequences and follow-ups. Apollo includes a built-in cloud dialer, call recording, AI-generated call summaries, and meeting intelligence tools that help sales teams maintain consistent engagement with prospects. Apollo.io integrates seamlessly with major CRMs including Salesforce, HubSpot, Pipedrive, Outreach, and SalesLoft, ensuring bi-directional sync of contacts, activities, and deals. Whether you're a startup building your first sales pipeline or a mid-market team consolidating multiple tools, Apollo provides a viable outbound process with a generous free tier that makes it accessible to teams of any size.
Pros & Cons
Pros
- Massive verified database with 210M+ contacts and 95% email deliverability
- All-in-one platform combining data, email automation, dialer, and CRM in one tool
- Generous free tier lets teams test and build outbound processes before committing
- Transparent, affordable pricing compared to enterprise alternatives like ZoomInfo
- Powerful search filters with saved personas for rapid, repeatable prospecting
Key Features
Contact Database
Access 210M+ verified B2B contacts and 30M+ companies with 82-90% accuracy on direct dials and 95% email deliverability
Advanced Lead Filtering
Identify decision-makers with complex filters and save custom personas for faster prospecting across firmographic and technographic criteria
Email Sequencing
Automate multi-touch email campaigns with A/B testing, task reminders, and follow-up workflows to maintain consistent outreach
Data Enrichment
Automatically enrich contact and company records with verified phone numbers, emails, job titles, company size, and technographic data
Built-in Cloud Dialer
Make calls directly from the platform with automatic call logging, US and international calling support, and CRM sync
Call Recording & AI Summaries
Record calls and receive AI-generated summaries and transcriptions to capture insights without manual note-taking
Chrome Extension
Prospect directly from LinkedIn, company websites, or anywhere online with real-time contact data capture
Pricing
Free
$0
- 210M+ contact database access
- 5 mobile credits/month
- 10 export credits/month
- 2 active email sequences
- Chrome extension
Best For
Startup Lead Generation
Startup sales teams use Apollo's free tier to access millions of verified contacts, identify decision-makers, and build their first outbound pipeline without upfront costs
Automated Outbound Campaigns
Mid-market companies leverage email sequencing and the built-in dialer to run multi-touch outbound campaigns at scale while maintaining CRM data sync
Account-Based Marketing & Enrichment
Marketing and sales teams enrich existing contact lists with verified data and build targeted account lists for personalized ABM campaigns
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