Apollo.io vs ZoomInfo
A detailed comparison of Apollo.io and ZoomInfo. Find out which AI SDR solution is right for your team.
📌Key Takeaways
- 1Apollo.io vs ZoomInfo: Comparing 6 criteria.
- 2Apollo.io wins 0 categories, ZoomInfo wins 0, with 6 ties.
- 3Apollo.io: 4.5/5 rating. ZoomInfo: 3.9/5 rating.
- 4Both tools are evenly matched - choose based on your specific needs.
Apollo.io
End-to-end B2B sales intelligence and engagement platform with 265M+ contacts, AI-powered research, and multi-channel outreach automation
ZoomInfo
Enterprise B2B data and intelligence platform with 100M+ contacts, intent data, and sales automation tools
0
Apollo.io wins
6
Ties
0
ZoomInfo wins
Feature Comparison
| Criteria | Apollo.io | ZoomInfo | Winner |
|---|---|---|---|
| Email Deliverability | 4 | 4 | Tie |
| Personalization | 5 | 5 | Tie |
| Automation Level | 5 | 5 | Tie |
| CRM Integration | 3 | 3 | Tie |
| Ease of Use | 5 | 5 | Tie |
| Multi-channel Support | 5 | 5 | Tie |
Detailed Analysis
Email Deliverability
TieApollo.io
Apollo.io's email deliverability capabilities
ZoomInfo
ZoomInfo's email deliverability capabilities
Comparing email deliverability between Apollo.io and ZoomInfo.
Personalization
TieApollo.io
Apollo.io's personalization capabilities
ZoomInfo
ZoomInfo's personalization capabilities
Comparing personalization between Apollo.io and ZoomInfo.
Automation Level
TieApollo.io
Apollo.io's automation level capabilities
ZoomInfo
ZoomInfo's automation level capabilities
Comparing automation level between Apollo.io and ZoomInfo.
CRM Integration
TieApollo.io
Apollo.io's crm integration capabilities
ZoomInfo
ZoomInfo's crm integration capabilities
Comparing crm integration between Apollo.io and ZoomInfo.
Ease of Use
TieApollo.io
Apollo.io's ease of use capabilities
ZoomInfo
ZoomInfo's ease of use capabilities
Comparing ease of use between Apollo.io and ZoomInfo.
Multi-channel Support
TieApollo.io
Apollo.io's multi-channel support capabilities
ZoomInfo
ZoomInfo's multi-channel support capabilities
Comparing multi-channel support between Apollo.io and ZoomInfo.
Feature-by-Feature Breakdown
Massive AI‑enhanced contact database
ZoomInfoApollo.io
Provides access to over 270 million verified contacts and 30 million companies, continuously enriched by AI algorithms that validate emails, phone numbers, and firmographic data, ensuring high‑quality prospect lists for outbound campaigns. Higher lead accuracy reduces bounce rates and improves conversion.
✓ Higher lead accuracy reduces bounce rates and improves conversion
ZoomInfo
ZoomInfo's flagship capability provides instant access to the world's largest B2B database containing over 200 million company profiles and 500+ million verified business contacts. Each company record includes comprehensive firmographic data such as annual revenue, employee headcount, industry classification, headquarters location, subsidiary relationships, and detailed technology stack information revealing which software and tools the organization uses. Individual contact records go beyond basic information to include verified direct-dial phone numbers, professional email addresses, LinkedIn profiles, job responsibilities, reporting relationships, and tenure in current role. The platform's proprietary AI engine continuously monitors millions of data sources—including company websites, social media, job postings, press releases, and SEC filings—to detect changes in real-time. When an executive changes roles, a company announces funding, or an organization adopts new technology, ZoomInfo updates its database within hours rather than months, ensuring sales teams always work with current information. Quickly identify and reach the right decision-makers with verified, up-to-date contact information, reducing research time by 80% and email bounce rates by 40-60%.
✓ Quickly identify and reach the right decision-makers with verified, up-to-date contact information, reducing research time by 80% and email bounce rates by 40-60%
Both Apollo.io and ZoomInfo offer Massive AI‑enhanced contact database. Apollo.io's approach focuses on provides access to over 270 million verified contacts and 30 million companies, continuously enriched by ai algorithms that validate emails, phone numbers, and firmographic data, ensuring high‑quality prospect lists for outbound campaigns., while ZoomInfo emphasizes zoominfo's flagship capability provides instant access to the world's largest b2b database containing over 200 million company profiles and 500+ million verified business contacts.. Choose based on which implementation better fits your workflow.
Multi‑channel sequence automation
ZoomInfoApollo.io
Allows users to create email, phone, LinkedIn, and social media sequences with conditional triggers, A/B testing, and automated follow‑ups, all managed from a single dashboard. Saves time and ensures consistent outreach cadence.
✓ Saves time and ensures consistent outreach cadence
ZoomInfo
ZoomInfo's intelligent lead scoring system employs advanced machine learning algorithms that analyze dozens of data points to automatically rank prospects by their likelihood to convert into paying customers. The system examines firmographic fit (company size, industry, revenue), technographic signals (current technology stack, recent software adoptions), behavioral indicators (website visits, content downloads, email engagement), and intent data (third-party research activity indicating active buying interest). What makes ZoomInfo's scoring particularly powerful is its ability to learn from your organization's specific sales patterns—the system analyzes historical win/loss data to identify the characteristics that distinguish your best customers from poor fits. Over time, the algorithm continuously refines its predictions, becoming more accurate as it processes more data. Sales managers can configure scoring thresholds to automatically route high-priority leads to senior reps while nurturing lower-scored prospects through automated sequences. Sales teams focus their limited time on highest-probability prospects, typically increasing conversion rates by 30-50% while reducing time wasted on unqualified leads.
✓ Sales teams focus their limited time on highest-probability prospects, typically increasing conversion rates by 30-50% while reducing time wasted on unqualified leads
Both Apollo.io and ZoomInfo offer Multi‑channel sequence automation. Apollo.io's approach focuses on allows users to create email, phone, linkedin, and social media sequences with conditional triggers, a/b testing, and automated follow‑ups, all managed from a single dashboard., while ZoomInfo emphasizes zoominfo's intelligent lead scoring system employs advanced machine learning algorithms that analyze dozens of data points to automatically rank prospects by their likelihood to convert into paying customers.. Choose based on which implementation better fits your workflow.
Integrated CRM and data enrichment
ZoomInfoApollo.io
Bidirectional sync with Salesforce, HubSpot, Microsoft Dynamics, Pipedrive and others, plus real‑time enrichment that updates contact records with new job changes, intent signals, and company data. Eliminates duplicate data entry and keeps the sales pipeline up‑to‑date.
✓ Eliminates duplicate data entry and keeps the sales pipeline up‑to‑date
ZoomInfo
ZoomInfo's ABM capabilities enable marketing and sales teams to identify, target, and engage high-value accounts through coordinated multi-channel campaigns with unprecedented precision. The platform allows users to build target account lists using sophisticated criteria including firmographic attributes, technographic profiles, intent signals, and custom scoring models. Once target accounts are identified, ZoomInfo provides complete organizational charts showing every decision-maker, influencer, and stakeholder involved in purchasing decisions—eliminating the guesswork that typically hampers ABM initiatives. Marketing teams can orchestrate personalized campaigns across email, display advertising, social media, and direct mail, with all touchpoints tracked and attributed within the platform. The system's intent data reveals which accounts are actively researching solutions in your category, allowing teams to prioritize outreach to prospects already in-market. Real-time alerts notify sales reps when target accounts show engagement signals, enabling timely follow-up that capitalizes on buying momentum. Increase average deal size by 25-40% and improve close rates by focusing coordinated resources on accounts with the highest revenue potential and active buying intent.
✓ Increase average deal size by 25-40% and improve close rates by focusing coordinated resources on accounts with the highest revenue potential and active buying intent
Both Apollo.io and ZoomInfo offer Integrated CRM and data enrichment. Apollo.io's approach focuses on bidirectional sync with salesforce, hubspot, microsoft dynamics, pipedrive and others, plus real‑time enrichment that updates contact records with new job changes, intent signals, and company data., while ZoomInfo emphasizes zoominfo's abm capabilities enable marketing and sales teams to identify, target, and engage high-value accounts through coordinated multi-channel campaigns with unprecedented precision.. Choose based on which implementation better fits your workflow.
AI Assistant & AI Projects
ZoomInfoApollo.io
AI‑driven assistants generate personalized email copy, recommend next‑best actions, and can be prompted to build targeted prospect lists or trigger workflows, acting as a co‑pilot throughout the sales process. Accelerates content creation and improves relevance of outreach.
✓ Accelerates content creation and improves relevance of outreach
ZoomInfo
ZoomInfo's integrated sales engagement platform eliminates the need for separate outreach tools by providing comprehensive automation capabilities directly within the intelligence platform. Sales representatives can build sophisticated multi-touch sequences combining personalized emails, scheduled phone calls, LinkedIn connection requests, and SMS messages—all orchestrated through intelligent automation that adapts based on prospect responses. The system's email capabilities include AI-powered personalization that automatically inserts relevant company details, recent news, and mutual connections into templates, dramatically improving response rates compared to generic outreach. Call logging happens automatically when integrated with phone systems, capturing call outcomes, duration, and notes without manual data entry. The platform tracks every interaction across channels, providing complete visibility into prospect engagement and ensuring no follow-up falls through the cracks. Advanced features include A/B testing for email subject lines and content, optimal send-time optimization based on recipient behavior patterns, and automatic CRM synchronization that keeps Salesforce or HubSpot records current without rep intervention. Automate 60-70% of repetitive outreach tasks while maintaining personalized engagement, enabling each rep to effectively manage 3-4x more prospects without sacrificing quality.
✓ Automate 60-70% of repetitive outreach tasks while maintaining personalized engagement, enabling each rep to effectively manage 3-4x more prospects without sacrificing quality
Both Apollo.io and ZoomInfo offer AI Assistant & AI Projects. Apollo.io's approach focuses on ai‑driven assistants generate personalized email copy, recommend next‑best actions, and can be prompted to build targeted prospect lists or trigger workflows, acting as a co‑pilot throughout the sales process., while ZoomInfo emphasizes zoominfo's integrated sales engagement platform eliminates the need for separate outreach tools by providing comprehensive automation capabilities directly within the intelligence platform.. Choose based on which implementation better fits your workflow.
Advanced analytics & reporting
ZoomInfoApollo.io
Tracks sequence performance, open/click/reply rates, buyer intent scores, and provides built‑in dashboards for A/B testing, pipeline forecasting, and revenue attribution. Gives sales leaders data‑driven insights to optimize strategies.
✓ Gives sales leaders data‑driven insights to optimize strategies
ZoomInfo
ZoomInfo's revenue intelligence suite transforms raw sales data into actionable insights that help leaders forecast accurately, coach effectively, and optimize go-to-market strategies. The platform's conversation intelligence capabilities automatically record, transcribe, and analyze sales calls and video meetings, using natural language processing to identify winning talk tracks, common objections, competitor mentions, and coaching opportunities. Pipeline analytics provide real-time visibility into deal health, flagging at-risk opportunities based on engagement patterns, stakeholder involvement, and historical comparison to similar deals. The forecasting engine combines bottom-up rep predictions with AI-driven analysis of actual deal signals, producing forecasts that are typically 20-30% more accurate than traditional methods. Customizable dashboards allow sales leaders to monitor team performance across dozens of metrics including activity levels, conversion rates, average deal size, and sales cycle length. The system automatically identifies best practices from top performers and surfaces recommendations for improving underperforming reps, turning tribal knowledge into scalable coaching programs. Gain complete visibility into pipeline health and team performance, improving forecast accuracy by 20-30% while identifying specific coaching opportunities that accelerate rep development.
✓ Gain complete visibility into pipeline health and team performance, improving forecast accuracy by 20-30% while identifying specific coaching opportunities that accelerate rep development
Both Apollo.io and ZoomInfo offer Advanced analytics & reporting. Apollo.io's approach focuses on tracks sequence performance, open/click/reply rates, buyer intent scores, and provides built‑in dashboards for a/b testing, pipeline forecasting, and revenue attribution., while ZoomInfo emphasizes zoominfo's revenue intelligence suite transforms raw sales data into actionable insights that help leaders forecast accurately, coach effectively, and optimize go-to-market strategies.. Choose based on which implementation better fits your workflow.
Strengths & Weaknesses
Apollo.io
Strengths
- ✓Massive B2B database with 270M+ verified contacts and 30M+ companies, continuously enriched by AI for high data accuracy and low bounce rates.
- ✓All-in-one platform combines prospecting, sequencing, CRM sync, and analytics - eliminates need for multiple point solutions and reduces tool sprawl.
- ✓AI-powered email writer and assistant generates personalized outreach at scale, recommends next-best actions, and builds targeted prospect lists from natural language prompts.
- ✓Bidirectional CRM integration with Salesforce, HubSpot, and others keeps data synchronized in real-time and eliminates duplicate data entry.
- ✓Flexible pricing with free tier and credit-based model makes enterprise-grade sales intelligence accessible to startups and SMBs.
Weaknesses
- ✗Credit system can be confusing - mobile numbers cost extra credits, and heavy users may find credit consumption adds up quickly.
- ✗Data accuracy varies by region - while US/EU contact data is strong, international markets may have less reliable information.
- ✗Per-user pricing on higher tiers can become expensive for large sales teams compared to flat-rate competitors.
- ✗Learning curve for advanced features - workflow automation and AI assistant require time to configure optimally.
ZoomInfo
Strengths
- ✓B2B Database & Contact Discovery: ZoomInfo's flagship capability provides instant access to the world's largest B2B database containing over 200 million company profiles and 500+ milli...
- ✓AI-Powered Lead Scoring: ZoomInfo's intelligent lead scoring system employs advanced machine learning algorithms that analyze dozens of data points to automatically rank prosp...
- ✓Account-Based Marketing (ABM): ZoomInfo's ABM capabilities enable marketing and sales teams to identify, target, and engage high-value accounts through coordinated multi-channel cam...
- ✓Sales Engagement & Automation: ZoomInfo's integrated sales engagement platform eliminates the need for separate outreach tools by providing comprehensive automation capabilities dir...
- ✓Revenue Intelligence & Analytics: ZoomInfo's revenue intelligence suite transforms raw sales data into actionable insights that help leaders forecast accurately, coach effectively, and...
Weaknesses
- ✗Learning curve for advanced automation features - optimal configuration may require experimentation and iteration.
- ✗Data accuracy varies by region - international markets may have less comprehensive or current contact information.
- ✗AI-generated content requires human review to ensure accuracy and brand voice consistency.
Industry-Specific Fit
| Industry | Apollo.io | ZoomInfo | Better Fit |
|---|---|---|---|
| All Industries | Apollo.io’s flexible data filters, AI‑driven intent detection, and customizable workflows allow any vertical—from SaaS to manufacturing—to build precise prospect lists, automate outreach, and integrate with existing CRMs, making the platform universally applicable. | Not specified | Apollo.io |
| SaaS | Provides deep technographic filters and product‑usage intent signals that help SaaS companies target accounts showing trial usage or recent funding, enabling timely outreach and faster customer acquisition. | Not specified | Apollo.io |
| Healthcare | Offers compliance‑ready GDPR and HIPAA‑compatible data handling, along with industry‑specific filters for hospital systems and medical device manufacturers, helping sales teams reach decision‑makers while maintaining regulatory standards. | Not specified | Apollo.io |
| Financial Services | Includes financial‑industry SIC codes, intent data for regulatory compliance software, and secure data encryption, allowing banks and fintech firms to prospect safely and efficiently. | Banks, insurance companies, and financial technology firms use ZoomInfo to identify and engage business clients for commercial banking, corporate insurance, and B2B fintech solutions. The platform's company firmographics—including revenue, employee count, and industry classification—enable precise targeting of businesses matching ideal customer profiles. Compliance-conscious financial institutions appreciate ZoomInfo's data governance controls and transparent sourcing practices. | ZoomInfo |
| E‑commerce | Leverages buying‑intent signals such as recent cart activity or ad spend spikes to identify high‑value merchants, and integrates with e‑commerce platforms for seamless lead capture. | Not specified | Apollo.io |
| Manufacturing | Provides extensive SIC code filtering (see source 13) and equipment‑specific contact data, enabling manufacturers to target procurement officers and engineering leads. | Not specified | Apollo.io |
| Education | Offers filters for K‑12, higher‑education, and ed‑tech organizations, plus intent data around curriculum purchases, helping vendors engage administrators and IT directors. | Not specified | Apollo.io |
| Real Estate | Supports property‑management and commercial‑real‑estate contact enrichment, allowing brokers to locate owners, investors, and leasing managers with high‑precision targeting. | Not specified | Apollo.io |
Our Verdict
Apollo.io and ZoomInfo are both strong AI SDR solutions. ZoomInfo stands out for massive ai‑enhanced contact database. Apollo.io: Offers a larger global database but lacks the native AI‑assistant workflow automation that Apollo provides.. Choose based on which specific features and approach best fit your workflow and requirements.
Choose Apollo.io if you:
- ✓You operate in All Industries
- ✓You prefer Apollo.io's approach to ai sdr
- ✓You prefer Apollo.io's approach to ai sdr
Choose ZoomInfo if you:
- ✓You need massive ai‑enhanced contact database capabilities
- ✓You need multi‑channel sequence automation capabilities
- ✓You operate in Technology & SaaS
Need Help Choosing?
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Sources & Evidence
Fully agentic end‑to‑end GTM platform with AI agents that orchestrate prospecting, engagement, and deal execution across the entire sales funnel
Source: Apollo.io introduced the industry’s first fully agentic GTM platform in Oct 2025, enabling AI assistants to automate list building, outreach sequencing, and deal workflow without manual intervention (source 12).
AI-powered B2B database with 200+ million verified business contacts and 20+ million company profiles, continuously updated with real-time data enrichment
Source: ZoomInfo maintains the largest B2B database in the industry with proprietary AI algorithms that verify and enrich contact data in real-time. The platform processes millions of data signals daily from web crawling, email verification, phone verification, and contributor networks to ensure accuracy and freshness. Independent studies confirm a 95%+ accuracy rate for contact information, significantly higher than competitors. The database covers 100+ million companies globally with detailed firmographic, technographic, and intent data that updates continuously rather than through periodic batch refreshes.
Apollo Wins “Best AI‑Powered Sales Solution” in 2025 MarTech Breakthrough Awards
Source: Apollo News - View source
Apollo.io Unveils Industry’s First Fully Agentic End‑to‑End GTM Platform
Source: Apollo News - View source
A complete overview of Apollo AI for 2025 - eesel AI
Source: eesel.ai - View source
Sales Development Representative – Role, Skills & Success Tips
Source: apollo.io - View source
Apollo.io
Source: knowledge.apollo.io - View source