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Apollo.io

Apollo.io combines the world's largest B2B contact database with 275M+ contacts, AI-powered sales engagement, email automation, and integrated dialer for complete sales workflow.

4.7
Verified
freemium

What is Apollo.io - 275M+ B2B Contact Database & AI Sales Intelligence Platform?

Apollo.io - 275M+ B2B Contact Database & AI Sales Intelligence Platform is a specialized sales & conversion tool designed to streamline workflows for professionals.

Apollo.io is an all-in-one sales intelligence and engagement platform that combines the world's largest B2B contact database containing over 275 million contacts and 73 million companies with powerful sales automation, email sequencing, AI personalization, power dialer, meeting scheduling, and CRM capabilities. The platform is designed to replace multiple disparate sales tools by providing end-to-end functionality for prospecting, outreach, engagement, and deal management in a single integrated environment. Apollo.io serves over 500,000 businesses worldwide including sales teams, business development representatives, account executives, marketers, recruiters, and revenue operations professionals who need accurate contact data combined with efficient outreach capabilities. The platform's core strength lies in its massive, continuously updated B2B contact database that provides access to verified email addresses, direct phone numbers, job titles, company information, technographics, funding data, and intent signals across millions of decision-makers globally. Unlike traditional contact databases that quickly become outdated, Apollo.io uses proprietary data verification systems, community contributions from its large user base, and continuous data enrichment processes to maintain high accuracy rates on contact information. This real-time data quality is critical for sales teams whose outreach effectiveness depends entirely on reaching the right people with working contact information. Apollo.io's prospecting capabilities allow users to build highly targeted lead lists using advanced filters including job title, seniority level, department, company size, industry, location, technologies used, funding stage, growth signals, hiring intent, and many other criteria. The platform's search interface makes it easy to narrow down the massive database to precisely the ideal customer profile for any business. Users can save searches, create lists, and continuously monitor for new contacts matching their criteria—ensuring a steady pipeline of fresh prospects without manual research work. The integrated email sequencing and automation engine enables users to create multi-touch outreach campaigns that automatically send personalized emails, follow-ups, and task reminders based on prospect behavior and engagement. Unlike standalone email automation tools, Apollo.io's sequences are tightly integrated with the contact database, allowing seamless transitions from finding prospects to engaging them with automated campaigns. Users can create sophisticated sequences with conditional logic, A/B testing variations, time delays, and trigger-based actions that optimize outreach effectiveness while maintaining personalization at scale. Apollo.io's AI capabilities significantly enhance sales productivity through multiple features. AI-powered email personalization generates contextually relevant opening lines, value propositions, and messaging based on prospect data, eliminating the time-consuming work of manually personalizing each outreach message. AI lead scoring analyzes prospect characteristics and engagement signals to prioritize which leads are most likely to convert, helping sales reps focus effort on highest-potential opportunities. AI research capabilities automatically gather relevant information about prospects and companies, providing sales reps with conversation-ready insights without manual research. The AI Assistant (currently in beta) provides intelligent recommendations and automates routine tasks throughout the sales workflow. The built-in power dialer enables sales teams to make high-volume outbound calls efficiently with features including local presence dialing, call recording, voicemail drop, call disposition tracking, and integration with sequences for coordinated multi-channel outreach. Unlike using separate dialer tools, Apollo.io's integrated dialer automatically logs calls to contact records, triggers follow-up tasks, and coordinates phone outreach with email sequences—creating truly multi-channel campaigns managed from one platform. Call recordings include AI-powered insights that analyze conversations, identify key moments, and provide coaching feedback to improve sales performance. Meeting scheduling capabilities allow prospects to book meetings directly from emails or outreach touchpoints using customizable booking links that sync with calendar availability. The platform eliminates the back-and-forth email exchanges typically required to schedule meetings, accelerating the path from initial contact to booked conversations. Users can create multiple meeting event types with different durations, availability windows, and routing rules to handle various meeting scenarios from discovery calls to demos. Apollo.io provides robust CRM integrations with Salesforce, HubSpot, and other major CRM platforms, ensuring contact data, activities, and engagement history sync bidirectionally between systems. This integration allows sales teams to access Apollo.io's prospecting and engagement capabilities while maintaining their existing CRM as the system of record. For teams without existing CRMs, Apollo.io includes native pipeline management features that provide basic CRM functionality for tracking deals, stages, and forecast. The platform's deliverability suite helps ensure outreach emails actually reach prospect inboxes rather than spam folders. Features include email warmup that gradually increases sending volume from new domains to build sender reputation, deliverability monitoring that tracks inbox placement rates, spam testing that identifies potential issues before sending campaigns, and domain health scoring that provides actionable recommendations to improve email deliverability. These deliverability tools are critical for maintaining high inbox placement rates that directly impact campaign effectiveness. Waterfall enrichment capabilities automatically enhance contact and company records with additional data points from multiple sources, filling in missing information and keeping records current. This enrichment happens automatically in the background, ensuring sales teams always have complete, accurate information about prospects without manual data entry or research. Users can enrich data via CSV uploads, CRM syncs, or API integrations, making it easy to enhance existing contact databases with Apollo.io's comprehensive data. Intent data and signals help identify prospects who are actively researching solutions or showing buying intent based on their digital behavior, technology adoption, hiring patterns, funding events, and other signals. These intent filters allow sales teams to prioritize outreach to prospects who are in-market and more likely to engage, improving conversion rates and reducing wasted effort on prospects who aren't ready to buy. Apollo.io's pricing structure is designed to scale from individual users to large enterprise sales organizations. The Free plan provides 900 credits per year (granted monthly) and includes AI Assistant access, AI Research, 2 sequences, browser extensions for prospecting, deliverability suite with email warmup, and basic filtering—making it possible to start using Apollo.io's core prospecting and outreach capabilities without upfront investment. The Basic plan at $49 per user per month (billed annually) provides 30,000 credits per year (granted upfront), unlimited sequences, advanced filters, CRM integrations, waterfall enrichment, 3 meeting event types, 6 intent topics, data enrichment via CSV/CRM/API, domain and mailbox purchasing, and US dialer access. The Professional plan at $79 per user per month (billed annually, most popular) includes 48,000 annual credits, A/B testing for sequences, 6 meeting events, Projects (currently in beta), unlimited Gmail and Microsoft mailboxes, automated workflows, 4,000 minutes of call recording with AI insights, analytics with pre-built reports, and US dialer access. The Organization plan at $119 per user per month (minimum 3 users, billed annually) provides 72,000 annual credits and includes all Professional features plus advanced customization, team management capabilities, priority support, and enterprise-grade features for larger organizations. The credit system in Apollo.io is used for actions like exporting contacts, revealing email addresses, mobile phone credits, and enrichment operations. Different plans include different annual credit allocations granted either monthly (Free plan) or upfront (paid plans), with credits refreshing annually. Understanding credit usage is important for planning prospecting volume and ensuring sufficient credits for your team's needs. Apollo.io is particularly valuable for several key use cases. B2B sales teams prospecting new accounts can leverage the massive contact database to build targeted lead lists and automate multi-touch outreach at scale. Account executives managing complex sales cycles benefit from integrated engagement tools, pipeline management, and activity tracking in one platform. Sales development representatives (SDRs) focused on booking meetings can use automated sequences, power dialer, and meeting scheduling to maximize daily activity volume. Marketing teams conducting account-based marketing can identify target accounts, find key decision-makers, and coordinate personalized outreach. Recruiters sourcing candidates can search Apollo.io's database for professionals matching specific criteria and automate recruitment outreach. Revenue operations teams can use Apollo.io's data enrichment, integrations, and analytics to optimize go-to-market processes and improve data quality across systems. While Apollo.io provides extensive functionality, users should understand that the platform's effectiveness depends significantly on how well it's configured and used. Successful Apollo.io implementations require thoughtful sequence design, personalized messaging, strategic prospecting filters, and ongoing optimization based on engagement data. The platform provides powerful tools, but results depend on sales fundamentals including targeting the right prospects, crafting compelling messages, and conducting effective conversations. Users should also be aware that while Apollo.io's database is large and generally accurate, no contact database is perfect—some emails will bounce, phone numbers change, and job titles become outdated. Successful teams build verification and data hygiene practices into their workflows to maintain quality.

Key Use Cases:

b2b contact database, sales intelligence platform, email automation, sales engagement, lead generation, prospecting tool, power dialer, crm integration, sales ai, outreach automation

Key Features

Access to 275M+ verified B2B contacts and 73M+ companies
AI-powered email personalization and content generation
AI lead scoring and research capabilities
Unlimited email sequences on paid plans
Advanced prospecting filters with intent data
Built-in power dialer with local presence
Call recording with AI-driven insights (4,000 mins on Pro)
Automated meeting scheduling with calendar sync
Multi-channel outreach sequences (email, phone, tasks)
A/B testing for email sequences on Professional plan
CRM integrations with Salesforce, HubSpot, and others
Waterfall enrichment from multiple data sources
Chrome and Salesforce browser extensions
Email deliverability suite with warmup capabilities
CSV, CRM, and API data enrichment
Intent topics and filters for buyer signals
Domain and mailbox purchasing
Unlimited Gmail and Microsoft mailboxes on Professional
Automated workflows for sales processes
Projects for team collaboration (beta)
Analytics with pre-built reports
Pipeline management and deal tracking
Mobile app for on-the-go prospecting

Top Alternatives

Frequently Asked Questions

What is Apollo.io?
Apollo.io is an all-in-one sales intelligence and engagement platform that combines a database of 275M+ B2B contacts and 73M+ companies with email sequencing, AI personalization, power dialer, meeting scheduling, and CRM capabilities to streamline the entire sales workflow from prospecting to deal closure.
How much does Apollo.io cost?
Apollo.io offers a Free plan with 900 annual credits. Paid plans include Basic at $49/user/month (30,000 credits), Professional at $79/user/month (48,000 credits, most popular), and Organization at $119/user/month with minimum 3 users (72,000 credits). All paid plans are billed annually and include 14-day free trials.
What are credits in Apollo.io and how do they work?
Credits are used for actions like exporting contacts, revealing email addresses, accessing mobile phone numbers, and enrichment operations. Free plan grants 900 credits annually (distributed monthly), while paid plans provide credits upfront annually: Basic (30,000), Professional (48,000), or Organization (72,000). Credits refresh annually on your subscription anniversary.
How accurate is Apollo.io's contact data?
Apollo.io uses proprietary verification systems, community contributions from 500,000+ users, and continuous enrichment to maintain high accuracy rates. While no database is 100% perfect, Apollo.io generally provides good contact data quality with verification features and deliverability tools to minimize bounces and improve outreach effectiveness.
Can I use Apollo.io for free?
Yes, Apollo.io offers a Free plan with 900 annual credits (granted monthly), AI Assistant access, AI Research, 2 sequences, browser extensions, deliverability suite with email warmup, and basic prospecting filters—allowing you to explore core features without payment.
What is the difference between Basic, Professional, and Organization plans?
Basic ($49/month) includes 30,000 credits, unlimited sequences, advanced filters, CRM integrations, and US dialer. Professional ($79/month, most popular) adds 48,000 credits, A/B testing, Projects, unlimited mailboxes, automated workflows, 4,000 minutes of call recording with AI insights, and analytics. Organization ($119/month, min 3 users) provides 72,000 credits and enterprise features for larger teams.
Does Apollo.io integrate with my CRM?
Yes, Apollo.io integrates with major CRM platforms including Salesforce, HubSpot, and others. Integration is bidirectional, syncing contacts, activities, and engagement history between systems. Apollo.io also includes native pipeline management features for teams without existing CRMs.
How is Apollo.io different from ZoomInfo?
Apollo.io combines contact database with built-in sales engagement tools (email sequences, dialer, meeting scheduling) at lower cost, while ZoomInfo focuses primarily on contact data with deeper enterprise information but requires separate tools for outreach. Apollo.io offers better value for teams wanting integrated prospecting and engagement workflows.
Can I make phone calls with Apollo.io?
Yes, Apollo.io includes a built-in power dialer on all paid plans (credits apply for usage). Features include local presence dialing, call recording, voicemail drop, call disposition tracking, and automatic logging to CRM. Professional plan includes 4,000 minutes of call recording with AI-powered insights and coaching.
What AI features does Apollo.io offer?
Apollo.io includes AI email personalization that generates contextually relevant messaging, AI lead scoring that prioritizes high-potential prospects, AI research capabilities for gathering prospect insights, AI-powered call insights from recordings, and an AI Assistant (beta) that provides recommendations and automates routine tasks throughout the sales workflow.
Does Apollo.io help with email deliverability?
Yes, Apollo.io includes a comprehensive deliverability suite with email warmup that gradually builds sender reputation, deliverability monitoring tracking inbox placement rates, spam testing identifying potential issues before sending, and domain health scoring with actionable recommendations to improve email deliverability.
Can I automate my sales outreach with Apollo.io?
Yes, Apollo.io's sequence engine allows you to create multi-touch outreach campaigns with automated emails, follow-ups, call tasks, and LinkedIn tasks based on prospect behavior and engagement. Sequences support conditional logic, A/B testing (Professional plan), time delays, and trigger-based actions for sophisticated automation.
How many contacts are in Apollo.io's database?
Apollo.io's database contains over 275 million verified B2B contacts and 73 million companies globally, making it one of the largest B2B contact databases available. The database includes verified emails, direct phone numbers, job titles, company information, technographics, and intent signals.
Is there a free trial for Apollo.io paid plans?
Yes, all paid plans (Basic, Professional, and Organization) include a 14-day free trial, allowing you to test premium features before committing to a subscription.
What is Apollo.io best used for?
Apollo.io excels at B2B outbound prospecting, account-based marketing, sales development operations, multi-channel outreach campaigns, pipeline management, and any sales workflow requiring accurate contact data combined with efficient engagement tools—all in one integrated platform.