or
By signing up, I agree to Apollo’s Terms of Service and Privacy Policy.
4.7/5
across 9,600+ G2 reviews
SOC 2 Type II
compliant
GDPR
compliant
240M+ global contacts
30M+ global companies
98% email accuracy rate
2M+ data contributors
WHY APOLLO
GTM data has a consistency problem. Enrichment logic varies by team, records go stale, and signals get lost before anyone acts. Apollo fixes that at the foundation.
One trusted record
One enrichment standard
One stream of signals
DATA SOURCES
Apollo combines multiple verified sources and cross-checks them in real time, so every record starts from more than one point of truth.
Apollo's contributor network
2M+ users help keep Apollo data fresh every day through inbox connections, CRM syncs, and real-world engagement signals.
Outreach that cleans bounces
We have powerful outreach tools like sequences where we can track email replies and bounces to collect and verify valid emails against invalid ones.
Leading third-party providers
Apollo partners with leading data providers to fill gaps in email, phone, firmographics, and company details. If one source is missing a field, another fills it.

DATA QUALITY
Records don't just get checked once and forgotten. Apollo is regularly updating its data, so a record you pull is a record you can act on.
Seven-step email verification with 98% accuracy
Additional email and phone verification via waterfall enrichment
Updates when someone changes jobs or gets a new email
Regularly refreshed emails, mobile numbers, and direct dials

DATA DEPTH
Firmographics tell you who exists, signals tell you who's actually ready to buy. Apollo’s 65+ filters helps narrow down who to act on when the time is right, no manual research required.
65+ filters, such as job changes, new hires, funding rounds, and company news
3rd-party intent data powered by Bombora
Website visitor tracking plus custom AI signals
ACCESSING APOLLO DATA
Workspace
API
MCP
CRM & integrations
SOC 2 Type II and ISO 27001 certified
GDPR compliant
Privacy controls you set
DATA COVERAGE
Data gaps? Fill them in with Waterfall Enrichment, or bring your own data.
Apollo is the AI GTM System that uniquely combines data, intelligence, and execution in one loop helping every business find and win their next customer. Trusted by millions of users and over 600,000 companies worldwide, Apollo combines one of the industry’s largest B2B contact databases with a purpose built GTM intelligence engine and a full execution stack, in an all-in-one system.
Yes. Apollo combines several verified sources, its 2M+ contributor network, vetted third-party providers, and public web data, and cross-checks them against each other. Emails run through a seven-step verification process for a 98% accuracy rate, and phone numbers are verified in real time when you request them.
From three main sources: a network of 2M+ users who connect inboxes and CRMs, leading third-party data providers, and publicly available web data that Apollo crawls and cleans.
Apollo verifies emails through a seven-step process, validates phone numbers in real time, and refreshes records whenever someone changes jobs or updates their info. Waterfall enrichment fills missing fields from multiple sources so records arrive complete.
Sign up for free and search by region to see total available accounts and contacts for your market. You can set your ICP criteria and search live for your target market and total addressable market.