Sales & marketing

Apollo.io

Website
Founded 2015Origin source ↗Checked 2026-09-15

Overview

Founded in 2015, Apollo.io is a lead intelligence and sales engagement platform trusted by nearly 9,000 paying customers, from rapidly growing startups to some of the largest global enterprises. Our community-based approach to crowdsourcing data gives users maximum coverage while ensuring data accuracy. Our advanced algorithms and unique data acquisition methods help over 500,000 sales professionals enrich and analyze prospects' data to increase quality conversations and opportunities.

We have notable investors: Y Combinator and Nexus Venture Partners. We recently completed a Series B financing to fuel our next growth phase. We have reached and maintained profitability for the last 18 months.

Our growth and customer feedback set us apart from competitors. Apollo had over one million sign-ups for its platform in the past year, and the number of weekly active users increased by over 400%. We are a top-ranking G2 Crowd vendor in the Sales Intelligence, Lead Intelligence, Marketing Account Intelligence, and Sales Engagement categories. Our highest scores are in the B2B data space for accuracy and ROI based on customer reviews.

Company description As recorded 2026-11-08
LinkedIn GitHub About
Sales & marketingWorkflow automationBusinessesSubscription

Founders & team

Previously ZenProspect

Company history As recorded 2026-11-08
800team members reported
Source-reported As recorded 2026-09-15

Founded 2015 · Source

News & product activity

Sources & observations

Sequoia · Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA; Remote
Pricing evidenceA pricing page was detected
Maturity: Launched · 4 of 6 areas documented

Source-based assessment · automated evidence rules

The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.

Company website: home Checked 2026-09-16

Sign up for free

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding yearpricing page observeddocumentation observedrecent publishing observed
startup.observe Directory coverage · Sources & method