Apollo.io

Apollo.io combines a database of business contacts and companies with the tools needed to reach them. Sales reps filter the database by role, industry, company size or other criteria, save lists, and enrol contacts in sequences that mix emails, calls and tasks. A built-in dialer, meeting scheduling and a deal pipeline cover the rest of the sales cycle, and the same data can enrich records in Salesforce or HubSpot. Workflows automate repetitive steps such as routing inbound leads or adding new contacts to a sequence, and an MCP server lets AI assistants query the account. It is used by startups and small and mid-sized sales teams that want prospecting data and outreach in a single subscription.