What it is and who it's for
Apollo.io is an all-in-one sales platform: a large B2B database (210M+ contacts) plus built-in email sequences, a phone dialer, a basic CRM and AI helpers for writing emails and prioritizing. It's for SDRs, founders and small sales teams who want "find, write, call" in one window without assembling a stack. It stands out for combining a big database with outreach tooling in a single product, with a generous free entry point.
Key features
- A B2B database of 210M+ contacts and 60M+ companies with ICP filters.
- Email sequences, a phone dialer, tasks and a basic CRM.
- AI assistants: email writing, scoring, deal recommendations.
- Data enrichment and signals (job changes, hiring, tech stack).
- Salesforce/HubSpot integrations and a LinkedIn extension.
- Sequence analytics and email A/B testing.
Get started in 5 minutes
- Sign up at apollo.io (generous free tier).
- Set your ICP filters, build a contact list, verify the emails.
- Launch an email sequence or a batch of tasks and calls, then watch the reply analytics.
When to use it, when not to
- ✅ Use it if you want a big ready-made database plus outreach and a dialer out of the box at an affordable price.
- ✅ Use it if a small team needs "everything for sales" in one tool.
- ❌ Skip it — go with "Clay" — if you need full control over waterfall enrichment and heavy personalization.
- ❌ Skip it — go with a dedicated CRM — if the job is managing deals and the pipeline rather than prospecting and outreach.
The honest price
A generous free tier (with credit and email limits); paid plans add credits, exports, advanced sequences and integrations. Exact numbers are on the vendor's site and they change.
Gotchas
- Contact and email accuracy isn't perfect — validate before any mass send.
- Cold outreach is regulated (GDPR, CAN-SPAM and so on) — follow the rules and don't burn your domain.
- Exports and credits are limited on the free tier.
- The built-in CRM is weaker than dedicated ones — a complex pipeline needs a separate CRM.
🤖 Prompt accelerator
"I'm running outreach through Apollo.io for this ICP
. Help me: 1) set precise contact search filters; 2) write a 3-step email sequence (a hooky subject line, a short first email and 2 follow-ups) for ; 3) build a checklist for email validation and domain warm-up so I don't land in spam. Suggest what to A/B test in subject lines and opening lines.