Apollo.io is an AI sales platform built as one connected go-to-market system. It joins a B2B database of more than 240 million contacts and 30 million accounts with AI agents that research accounts, build lists, write outreach, follow up and book meetings. Waterfall enrichment fills incomplete records, and buying signals such as intent, job changes and website visits help rank who to contact. Over 600,000 companies use it, and sign-up is free with no credit card required.
It serves sales development reps, account executives, revenue operations leads, marketers and founders who run prospecting and outreach, from small teams to large multi-team enterprises. Enterprise customers get governance, admin controls and permissions, along with SOC 2 Type II and ISO 27001 certifications. Teams can work inside Apollo's own workspace for prospecting, outreach and dialing, or take the data into the apps they already use through Apollo Anywhere and more than 200 integrations.
Typical workflows include defining an ideal customer profile in the AI Context Center, letting agents build target lists and draft sequences, and launching email and calls from one workspace. RevOps teams combine first-party CRM, product usage and call-recording data with Apollo's own data to get a single view of each account. Domain warming, inbox rotation and reputation monitoring support deliverability, and built-in tools help with GDPR, CAN-SPAM and do-not-call rules. Customers report better email deliverability after improving data accuracy, and agents keep memory that sharpens over time. Teams that already use a CRM can keep it as the system of record while Apollo supplies the contacts, signals and automation around it, so reps spend more of the day talking with buyers.
