Apollo.io
Prospect, enrich, and close fasterB2B sales intelligence platform with 275M+ contact database, email sequencing, AI prospecting, and outreach automation for SDR teams.
- Maker
- Apollo.io, Inc.
- Founded
- 2015
- Pricing
- Free tier
- Last checked
- October 2026
Verdict
B2B sales intelligence platform with 275M+ contact database, email sequencing, AI prospecting, and outreach automation for SDR teams.
Score breakdown
This agent leads its categorySMBs and growth-stage startups running US-focused outbound sales who want a single platform for prospecting, sequencing, and basic enrichment
Key features
- 275M+ B2B contact and 73M+ company database with real-time email verification
- Multi-step email and LinkedIn outreach sequencing with A/B testing
- Apollo AI Assistant for agentic, natural-language prospecting, enrichment and outreach (GA March 2026)
- Built-in sales dialer with call recording and local presence numbers
- Data enrichment for CRM records via CSV upload or native Salesforce/HubSpot sync
- Buying intent signals and job-change alerts for priority account monitoring
- Advanced Boolean search filters across 60+ firmographic and technographic fields
- Analytics dashboard tracking open, click, reply, and meeting-booked rates per sequence
Strengths
- +Massive B2B database of 275M+ contacts and 73M+ companies with granular filtering by title, tech stack, industry, and 60+ other attributes
- +All-in-one platform combines prospecting, email sequencing, and a built-in dialer — reducing the need for multiple tools
- +Competitive pricing vs. ZoomInfo and Lusha, with a usable free tier that lets small teams evaluate before committing
- +Native CRM sync with Salesforce and HubSpot and a broad Zapier/API integration ecosystem
- +AI Assistant (GA March 2026) drives end-to-end agentic GTM workflows — conversational research, enrichment, sequence drafting and reporting
Weaknesses
- −Email accuracy hovers around 75–85% and phone number quality is poor — users report outdated mobiles and high bounce rates, especially outside the US
- −Credit-based pricing is opaque: phone numbers cost 8x email credits, overages billed at $0.20 each, making real costs 2–3x advertised rates for heavy users
- −Reviewer split: strong on G2 (~4.7/5 for the product's breadth) but weak on Trustpilot (~2.9/5), where billing disputes, account suspensions, and slow lower-tier support dominate
- −Individual features (enrichment, deliverability, analytics) are broadly capable but rarely best-in-class compared to dedicated point solutions
Overview
Overview
Apollo.io is a B2B sales intelligence and engagement platform founded in 2015 (as ZenProspect) by Tim Zheng, Roy Chung, and Ray Li, and backed by Y Combinator. It rebranded to Apollo.io in 2018 and reported roughly $150M ARR (May 2025) at a $1.6B valuation set in its August 2023 Series D; in May 2026 the company said revenue had grown more than fivefold since that round, though no exact current figure is disclosed. The platform is headquartered in San Francisco.
The core product combines a 275M+ contact (73M+ company) database with built-in outreach tooling — email sequencing, a sales dialer, LinkedIn automation, and CRM enrichment — in a single self-serve interface. This all-in-one positioning makes it a popular alternative to stitching together ZoomInfo for data, Outreach/SalesLoft for sequencing, and a separate enrichment tool.
In March 2026 Apollo brought its AI Assistant to general availability (after a beta that opened in October 2025), positioning it as an end-to-end agentic GTM layer: reps drive prospect discovery, enrichment, outreach and reporting through natural language. The company reports roughly 20,000 weekly users and that beta users booked ~2.3x more meetings. In practice it remains “draft-and-approve” rather than fully autonomous, but it is meaningfully more capable than the late-2025 beta.
Apollo’s biggest real-world limitation is data quality: email bounce rates of 15–30% are common, phone number accuracy is notably weaker, and international coverage is meaningfully worse than US coverage. The credit-based pricing model is also a common frustration, as actual per-user costs frequently exceed the advertised plan price once overages and add-ons are factored in.
Key Benefits
- Database breadth: 275M+ contacts filterable across 60+ firmographic and technographic attributes, making list-building faster than most alternatives at the same price point.
- Reduced tool sprawl: Prospecting, sequencing, dialing, and enrichment in one platform cuts subscription costs and context-switching for smaller teams.
- Accessible entry point: The free tier provides enough credits for early validation, and the Basic plan at $49/month is well below legacy data providers.
- CRM-native enrichment: Native Salesforce and HubSpot sync keeps contact records up to date without a separate enrichment workflow.
- Embedded AI features: The 2025 AI Assistant speeds up account research and draft generation within the existing workflow rather than requiring a separate tool.
Use Cases
- Outbound SDR prospecting — Sales reps build targeted lead lists using Apollo’s filters, verify contact details, and launch multi-step email or LinkedIn sequences without leaving the platform.
- CRM data enrichment — RevOps teams upload existing contact lists or connect Salesforce to auto-fill missing firmographic fields, job titles, and verified emails.
- Account-based marketing list building — Marketing teams identify ICPs by technology stack, headcount, funding round, or hiring signals to feed campaigns with pre-qualified accounts.
- Pipeline coverage for lean teams — Early-stage startups without a dedicated sales stack use Apollo as their single outbound tool, combining prospecting and engagement in one affordable subscription.
Pricing
Checked October 2026 · USD- 100 email export credits per month
- 5 mobile number credits per month
- Basic email sequencing (2 active sequences)
- Limited search filters
- Gmail and Outlook integration
- 1,000 email export credits per month
- 20 mobile number credits per month
- Unlimited email sequences
- CSV export and CRM sync
- Basic analytics and reporting
- 2,000 email export credits per month
- 50 mobile number credits per month
- AI-powered sequence suggestions and assistant
- A/B testing on email steps
- Call recording and dialer access
- Advanced analytics and buying intent data
- Minimum 3 users required
- Custom credit pooling across team
- SSO and advanced user permissions
- Custom fields and API access
- Dedicated customer success manager