Apollo.io is a Sales intelligence & engagement platform by Apollo.io, Inc. This profile pulls together Apollo.io's ratings across the major review sites, its company and funding details, leadership, features, pricing, and the latest news, with every external source cited at the bottom.
About Apollo.io, Inc.
Apollo.io is a sales intelligence and engagement platform that combines a B2B contact database of over 275 million contacts and 60 million companies with an outbound sequencing engine, dialer, email tracking, and AI-assisted writing tools in a single product. Founded in 2015 in San Francisco by Tim Zheng, Roy Chung, and Ray Li, the company repositioned itself around 2021 from a niche prospecting tool into a full-stack sales platform to compete directly with ZoomInfo plus Outreach as a bundled alternative. Apollo raised approximately $251 million total across four funding rounds and reached a reported valuation of $1.6 billion on its Series D in 2023, making it a unicorn. The company serves more than 500,000 businesses including teams at Autodesk, Rippling, Gong, and Snowflake, and has roughly 1,000 employees as of 2026.
| Category | Sales intelligence & engagement platform |
| Company | Apollo.io, Inc. |
| Founded | 2015 |
| Headquarters | San Francisco, California, US |
| Industry | Software Development · Sales intelligence & engagement |
| Team size | ~1,000 (2026 estimate) |
| Ownership | Private (valuation ~$1.6B at Series D, August 2023) |
| Founder / CEO | Tim Zheng, Roy Chung, and Ray Li (co-founders, 2015) |
| Specialties | Sales intelligence, B2B contact database, email sequencing, cold outreach, dialer, lead scoring, account-based selling, AI sales assistant, CRM enrichment |
| Website | apollo.io |
Find Apollo.io on: Wikipedia · Crunchbase · LinkedIn · G2 · Capterra · producthunt.com
Apollo.io ratings across the web
Aggregated from the major review platforms. Each links to the source.
Also rated: TrustRadius 8.8/10 (212).
Rating breakdown
Per-category scores from Capterra Apollo.io (357 reviews).
Who uses Apollo.io
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What people say about Apollo.io
Our synthesis across 7,742 G2 reviews at 4.7/5 and 357 Capterra reviews at 4.6/5; one of the highest-volume review datasets in its category, reflecting broad SMB adoption. No fabricated quotes, this is the consistent pattern across reviews and third-party analyses.
Most praised
- The database-plus-sequencing combination in one tool is Apollo's most-cited strength: reps can find a prospect, verify the email, build a sequence, and send the first touch without leaving the app or paying for two separate tools
- Value relative to ZoomInfo is cited constantly; Apollo's pricing at $49-$119/user/mo compared to ZoomInfo's $15,000+ annual minimums makes it the default choice for sub-50-person sales teams
- The free tier is generous enough to generate real pipeline: 50 email credits/mo, basic filters, and sequence access let an individual seller test the database quality on their target market before upgrading
Most cited complaints
- Data quality is the most common complaint, particularly for international contacts outside the US and UK: email bounce rates from European and APAC accounts are reported as significantly higher than domestic rates, and mobile number coverage outside North America is sparse
- Customer support at the Basic tier is slow and often limited to documentation links; multiple reviewers flag week-long response times on billing and data disputes
- The credit system confuses buyers: export credits, email credits, mobile credits, and sequence credits are separate pools with different replenishment rates, and new users frequently burn their monthly allocation in the first week
What we found testing it
What's great
- Contact database of 275M+ profiles plus sequencing in one tool -- eliminates the separate ZoomInfo or Lusha subscription for teams under 100 reps
- 4.7/5 on G2 across 9,344 reviews, the highest satisfaction rating in this guide and the most reviews outside of Salesloft
- Free tier covers real outbound workflows; under-5-rep teams can ship prospecting without paying anything
Watch-outs
- Data quality on niche verticals and international contacts falls below ZoomInfo or Lusha; verify before loading a board-level target list
- Sequencing depth is lighter than Outreach -- no conditional branching, limited A/B split logic, fewer governance controls for large SDR teams
- Credit system for email verification and phone reveals can surprise growing teams; plan credit burn before month three
Apollo.io funding & ownership
| Round | Amount | Date | Lead investor |
|---|---|---|---|
| Seed | $1.75M | 2015 | Y Combinator (W16 batch) |
| Series A | $7M | 2018 | Nexus Venture Partners |
| Series B | $32M | 2021 | Tribe Capital |
| Series C | $110M | 2022 | Insight Partners |
| Series D | $100M | Aug 2023 | Bain Capital Ventures (valuation ~$1.6B) |
Moderate-to-low risk. Apollo is a unicorn-valued private company with a credible product in a large TAM and strong G2 review velocity, which is a leading indicator of genuine market traction. The company is not known to be profitable. Its usage-based credit model and high free-tier adoption rate generate strong top-of-funnel conversion but can create unit economics pressure at scale. Data quality and compliance (particularly GDPR) are Apollo's most-cited enterprise blockers and the primary competitive attack surface for ZoomInfo. The realistic risk for buyers is not platform survival but data freshness: Apollo's contact database quality in specific regions and verticals is meaningfully uneven, and teams should validate before committing.
Apollo.io features & integrations
Security & compliance
| Standard | Availability |
|---|---|
| GDPR | Yes (with data processing agreement available) |
| HIPAA | No |
| SOC 2 Type II | Yes (SOC 2 Type II) |
| SSO / SAML | Yes (SAML SSO on Organization plan) |
Integrations: Salesforce, HubSpot, Outreach, Salesloft, LinkedIn Sales Navigator, Gmail, Outlook, Zapier, Slack, and Pipedrive.
Apollo.io leadership
Apollo.io pricing
| Plan | Price | Best for |
|---|---|---|
| Free | $0 | 50 email credits/mo, basic prospecting filters, limited sequencing; sufficient for a solo rep validating ICP before committing |
| Basic | $49/user/mo (annual) | 1,000 email credits/mo, unlimited sequences, basic integrations; early-stage sales teams running manual outbound |
| Professional | $79/user/mo (annual) | Advanced filters, A/B testing, call recording, AI email assist, higher credit volumes; growing SDR teams |
| Organization | $119/user/mo (annual; 3-seat minimum) | SAML SSO, call transcription, advanced permissions, intent data, custom reporting; teams of 10+ reps |
The catch: Apollo's pricing looks simple on the surface but hides complexity in the credit model. The free tier gives 50 email credits and 5 mobile credits per month, which is enough to validate your target ICP but not enough to run a real outbound motion. Basic at $49/user/mo (annual) jumps to 1,000 email credits and 50 mobile credits. Professional at $79/user/mo unlocks advanced filters, A/B testing, call recording, and more credit volume. Organization at $119/user/mo adds SAML SSO, call transcription, and custom permission sets. The catch is that contact-enrichment API calls and CRM sync operations consume credits separately from manual prospecting, so CRM-enrichment use cases can exhaust credit pools faster than expected. Apollo's annual commitment pricing is roughly 25-30% cheaper than monthly.
Apollo.io alternatives & where it appears
Featured in our guides
Apollo.io product changelog
What Apollo.io has actually shipped, summarized from its own release notes and dated. Not auto-generated, updated as part of our freshness checks.
- August 1, 2026
Apollo AI SDR in beta
Apollo launched an AI SDR agent that autonomously researches prospects, writes personalized first-line copy, and queues sequences for human review, targeting the AI-native outbound trend.
Source - June 15, 2026
Enrichment API v3 released
Apollo's data enrichment API was updated to v3 with real-time email verification, mobile number coverage expansion, and webhook-based CRM sync triggers for HubSpot and Salesforce.
Source - May 20, 2026
Conversations (call intelligence) GA
Apollo's call recording and conversation intelligence feature, which transcribes calls, surfaces objection patterns, and scores rep performance, reached general availability on the Organization plan.
Source - April 3, 2026
LinkedIn prospecting integration tightened
Apollo's Chrome extension updated to comply with LinkedIn's API usage policies while retaining core prospect-saving and email-finding functionality for users within LinkedIn Sales Navigator.
Source - February 10, 2026
Intent signals from third-party data
Apollo added Bombora-powered buying intent signals and G2 category intent data to its prospecting filters, allowing reps to surface accounts actively researching relevant software.
Source
Latest Apollo.io news
Auto-pulled from Google News, refreshed on each deploy. Headlines link to the source.
- Apollo.io Brings AI-Powered GTM Workflows to Perplexity Computer for Growing Businesses - PR NewswireWed, 03 Jun 2026
- Apollo.io Acquires Pocus to Advance GTM Operating System - Demand Gen ReportTue, 31 Mar 2026
- Apollo.io Hires Phil Moon as CFO as AI-Powered Sales Platform Pushes Upmarket - citybizThu, 28 May 2026
- Apollo.io Revenue 2025: $150M ARR, $1.6B Valuation - GetLatkaFri, 03 Jul 2026
- Apollo acquires Pocus as it approaches $200M ARR - The Next WebFri, 20 Mar 2026
- ZoomInfo Must Face Apollo Antitrust, False Ad Claims - Law360Thu, 07 May 2026
Apollo.io FAQs
How accurate is Apollo's database?
In the US, Apollo's email accuracy is generally competitive: independent tests typically show 15-25% hard bounce rates, which is on par with or slightly better than comparable tools at its price point. International data is materially weaker. European B2B emails bounce at 25-35% in reported tests, and mobile coverage outside North America is sparse. Apollo verifies emails in real time via its email validator, which catches obvious invalid addresses but not all role changes. If your target market is EMEA or APAC-heavy, validate a sample before buying.
Is Apollo GDPR compliant?
Apollo publishes a GDPR compliance stance and offers a Data Processing Agreement for paid customers. In practice, the GDPR legality of using Apollo's database for cold outreach into the EU depends on your legal basis (legitimate interest is commonly cited) and your own outreach process, not just Apollo's compliance posture. EU-based legal teams should review Apollo's data provenance documentation and your own outbound program design before using it for European prospecting at scale.
How does Apollo compare to ZoomInfo?
Apollo is the clear winner on price-to-value for sub-100-seat sales teams. ZoomInfo requires annual contracts starting around $15,000-20,000, has a more comprehensive enterprise dataset, and is better for account-based selling at scale. Apollo wins on accessibility, self-serve onboarding, and the built-in sequencing layer that eliminates a second tool purchase. Teams at 3-25 reps on a budget almost always go Apollo. Teams at 100+ reps with enterprise accounts in regulated industries often justify ZoomInfo's price on data depth alone.
What is Apollo's refund policy?
Apollo's standard annual subscription is non-refundable after the initial billing period, which multiple Capterra reviewers flag as a pain point. Monthly plans are cancellable at any time but also non-refundable for the current period. If you're evaluating Apollo for a larger team commitment, run the free tier and a single-seat monthly plan before committing to an annual multi-seat contract. Apollo's sales team can often negotiate trial periods or credit packs for enterprise deals.
Who is Apollo best for?
Apollo is best for outbound-focused sales teams of 2 to 75 reps who need prospecting data and a sequencing engine in one tool at a price that does not require a VP of Sales to approve. It is particularly strong for software, marketing, and staffing companies targeting US-based SMBs and mid-market accounts. Teams targeting enterprise accounts in heavily regulated industries, or with meaningful EMEA or APAC territory, should validate data quality in their specific segment before committing to an annual plan.
Sources
Every external figure on this page traces to a public source, last collected on the dates shown.
- G2: Apollo.io reviews — rating 4.7/5, 7,742 reviews, read live (accessed 2026-08-30)
- Capterra: Apollo — rating 4.6/5, 357 reviews, sub-scores and demographics (accessed 2026-08-30)
- TrustRadius: Apollo.io — score 8.8/10, 212 reviews (accessed 2026-08-30)
- Crunchbase: Apollo.io — funding history, Series D at $1.6B valuation, investors (accessed 2026-08-30)
- Apollo.io pricing page — Free/Basic/Professional/Organization tiers, credit allocations, feature gates (accessed 2026-08-30)
- LinkedIn: Apollo.io company page — employee count, HQ, industry, specialties (accessed 2026-08-30)
- Apollo.io blog: Series D announcement — Series D raise details, valuation, product roadmap commentary from Tim Zheng (accessed 2026-08-30)
- Wikipedia: Apollo.io — founding, founders, product history, funding overview (accessed 2026-08-30)