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Overview
Apollo.io is an all-in-one outbound sales intelligence and engagement platform that combines a massive B2B contact database with built-in email sequencing, a power dialer, and a lightweight CRM. With over 270 million contacts and 73 million companies in its database, Apollo provides the most accessible prospecting platform available, especially notable because its generous free tier offers 10,000 email credits per month at no cost.
The platform's strength is accessibility and integration. Unlike ZoomInfo which requires enterprise contracts, or Clay which has a learning curve, Apollo gives you a searchable contact database, email verification, multi-step sequences with A/B testing, and a Chrome extension for LinkedIn prospecting, all in one platform with an intuitive interface. The buying intent signals help prioritize which accounts to target based on behavioral data.
In the B2B SaaS marketing stack, Apollo is typically the first outbound tool companies adopt. It serves as the prospecting database and initial outreach engine, often complemented by Clay for deeper enrichment and personalization at scale. It integrates with HubSpot and Salesforce for CRM sync, Slack for notifications, and Zapier for custom workflows. For teams doing less than 5,000 outbound emails per month, Apollo may be the only outbound tool needed.
Key Features for Marketers
Contact Database
270M+ B2B contacts and 73M companies with filters for title, seniority, industry, company size, technology, and more, with 10K free email credits monthly.
Email Sequences
Multi-step email sequences with A/B testing, automated follow-ups, scheduling, and reply detection for organized outbound campaigns
Power Dialer
Built-in click-to-call dialer with call recording, transcription, and voicemail drop for high-volume phone prospecting
Chrome Extension
LinkedIn prospecting extension that reveals contact data, adds prospects to sequences, and logs activity directly from LinkedIn profiles
Buying Intent Signals
Behavioral intent data that identifies accounts showing buying signals so you can prioritize outreach timing
CRM & Deal Tracking
Lightweight CRM with deal pipeline, activity tracking, and bi-directional sync with HubSpot and Salesforce
Key Features for Marketers
Ideal for
SDR teams, sales leaders, and growth marketers at B2B SaaS companies running outbound prospecting as a primary or supplementary growth channel
Best fit for
Teams sending 500-5,000 outbound emails per month who need a combined database and sequencing tool
Company stages
Startup and Scaleup
Pros & Cons
What We Love
- Generous free tier with 10K email credits/month that is unmatched
- Built-in email sequencer with A/B testing is decent
- Database covers 270M+ contacts with reasonable accuracy
- Chrome extension for LinkedIn prospecting works well
- Buying intent signals help prioritize outreach timing
Watch Out For
- Enterprise data accuracy is inconsistent, so verify critical contacts
- Email deliverability needs careful monitoring and warm-up
- UI can be clunky and slow with large prospect lists
- Sequence analytics and A/B testing reporting are basic
- Data enrichment is less comprehensive than Clay or ZoomInfo
Pricing Plans
Free
$0 /m
- 10K email credits
- 5 mobile credits
- Basic sequences
- Limited filters
- 250 emails per day
Basic
$49 /m
- Unlimited email credits
- 75 mobile credits
- Advanced filters
- 10K records export
Professional
$79 /m
- Unlimited email credits
- 150 mobile credits
- A/B testing
- Advanced reports
- Dialer
Organization
$99 /m
- Unlimited everything
- Buying intent
- Call transcription
- International dialing
