Apollo.io
A prospecting and sales engagement platform with a 275 million contact database a built-in email sequencer and a free plan — the most accessible all-in-one outbound tool in the category.
Apollo is the rare enterprise-adjacent sales tool that actually has a free plan worth using. You get 50 email credits per month a basic email sequencer and access to the 275 million contact database at no cost — which is more than enough to understand whether the platform works for your outbound motion before paying for it. The database is the core product. You filter by job title company size industry technology stack funding stage and dozens of other signals and Apollo returns a list of contacts with verified email addresses and direct dials. That contact identification layer combined with the built-in email sequencer means you can go from identifying a prospect to sending them a personalised sequence without leaving the platform. The AI email writing generates personalised first lines from LinkedIn and company data so you are not sending identical copy to everyone. One honest observation: data accuracy is the persistent critique. Independent reviewers consistently rate Apollo at 85 to 90 percent email accuracy which is strong for the price point but means some percentage of your outreach bounces or hits invalid addresses. Teams requiring 95 percent plus accuracy for compliance or deliverability reasons gravitate toward ZoomInfo or Cognism despite the higher cost. Paid plans start at around $49 per user per month. For startups SMBs and budget-conscious outbound teams that need contact data and sequencing in one tool without a $15,000 ZoomInfo contract Apollo is the clearest starting point.
- Category: Sales
- Pricing: Freemium
- Rating: 4.5 / 5 (0 reviews)
- Platforms: Web, iOS, Android
Key features
- 275 million contact database — Searchable contact and company database with email addresses and direct dials across multiple industries and geographies
- Advanced filtering — Filter prospects by job title company size industry funding stage technology stack and dozens of other signals
- Email sequencer — Built-in multi-step email sequence builder with personalisation and scheduling
- AI email writing — Generates personalised first lines and email copy from LinkedIn and company data
- Free plan — 50 monthly email credits and basic sequencing at no cost for evaluation
- Intent data — Buyer intent signals showing which accounts are actively researching relevant topics
- Dialer — Built-in calling functionality for direct dial outreach alongside email sequencing
- CRM sync — Integration with Salesforce HubSpot and other CRM platforms for activity logging
Pros & Cons
Pros
- Free plan with genuine functionality for evaluation is unique at this category price point
- 275 million contact database combined with built-in sequencing removes the need for separate data and engagement tool subscriptions
- Advanced filtering granularity for prospect identification is comparable to tools costing 10x more
- AI email personalisation from LinkedIn and company data reduces the manual research time per outbound sequence
- $49 per user per month paid entry price is accessible for small teams where ZoomInfo pricing is prohibitive
Cons
- Data accuracy at 85 to 90 percent for email validity means some outreach bounces — teams requiring higher accuracy need ZoomInfo or Cognism
- Conversation intelligence and pipeline forecasting are lightweight compared to dedicated tools like Gong
- High-volume outreach through Apollo can create deliverability issues if email warming and sending limits are not carefully managed
- Support quality at lower plan tiers receives consistent criticism in independent reviews compared to enterprise-tier support