Best for: Startups and sales teams that want data and outreach in one affordable tool
Price: Freemium · from $49/user/month
Free: Free plan with limited email, mobile and export credits
Platforms: Web, API
Made by: Apollo.io

What it is

Apollo gives you search across 200M+ contacts, then lets you run email sequences, calls and follow-ups from the same place. Paid plans add AI-assisted email writing, A/B testing, call recording and CRM integrations.

What the AI does

AI-assisted email writing
AI research and personalisation
Call recording on Professional and up
Lead scoring and recommendations

Pros and cons

Huge contact database with a usable free plan
Sequences, dialer and CRM sync included
Low per-seat price against enterprise tools

Credit system and overages make real costs much higher than list price
Phone data accuracy reported at only 65–70%
Credits expire monthly

How it scores

Prospecting quality7.5

Ease of use8

Features8.5

Value for money9

Platforms8

The most complete package for the money; data accuracy is the weak spot.

Feature checklist · 6 of 9

Built-in B2B contact database (yes)
Finds and verifies emails or enriches leads (yes)
AI writes personalised messages (yes)
Automated multi-step email sequences (yes)
LinkedIn steps in sequences (no)
Calling or dialer (yes)
Inbox warm-up and deliverability tools (no)
AI agent that runs outreach end to end (no)
Syncs with Salesforce or HubSpot (yes)

How we score apps →

Alternatives

See all Apollo.io alternatives, ranked →

Instantly 8.0/10Founders and small teams running high-volume cold email
Lemlist 7.9/10Teams that want personalised email plus LinkedIn and calling steps
Amplemarket 7.4/10Mid-size sales teams that want data, signals and sequences in one tool
Clay 7.3/10Growth and RevOps teams building highly targeted lists