Apollo.io

Apollo.io is a go-to-market intelligence platform that combines a massive B2B contact database with sales engagement tooling. It is used by over 1 million salespeople to find leads, enrich CRM data, and run automated outbound sequences.

## What Apollo Does Well

**Prospecting database** is Apollo's core asset. The platform indexes 260 million contacts across 60+ million companies, with verified emails, direct dials, LinkedIn URLs, company size, technology stack, and intent data. Sales reps can filter by any combination of attributes — job title, company stage, tech used, funding date, department headcount — to build highly targeted lists instantly.

**Sequencing and engagement** let reps run multi-step outbound sequences directly from Apollo: email sequences with AI-written personalization, LinkedIn tasks, call steps, and follow-up conditions. The AI can personalize emails at scale using data from the prospect's company and role. Sequence analytics show open, reply, and conversion rates at each step.

**CRM enrichment** keeps records fresh. Apollo pulls from its database to fill in missing contact fields, update job titles when people change roles, and surface new contacts at existing accounts. It integrates directly with Salesforce and HubSpot.

**AI features** include email subject line generation, opening line personalization based on prospect's recent LinkedIn activity or company news, and deal scoring. Apollo also provides conversation intelligence through call recording and AI summaries.

## Who Apollo Is For

Apollo is widely used by SDR and outbound-heavy teams at startups and mid-market companies. It is a strong fit for companies that rely on cold outbound — especially in B2B SaaS, professional services, and technology sales. Enterprise teams typically use it alongside a dedicated CRM rather than as a CRM replacement.

The free tier provides 10 credits/month for email and phone lookups. Paid plans start at $49/user/month for higher data export volumes.

## Limitations

Data accuracy varies by region and seniority level — enterprise C-suite contacts are well-covered, but SMB decision-makers may have outdated information. Email deliverability depends heavily on domain warm-up and list hygiene. Apollo's own email-sending features can get domains flagged if sequences are not managed carefully.