What are Sales Intelligence Tools?
In today's competitive business environment, having access to accurate and up-to-date data is critical for sales success. Sales intelligence tools like Hunter.io, Apollo.io, and ZoomInfo SalesOS are designed to provide businesses with the data they need to find, connect, and engage with potential customers. In this article, we'll compare these three sales intelligence tools and help you decide which one is the right fit for your business.
The 3 most popular sales intelligence tools in comparison
Hunter.io is an email finder tool that allows users to find and verify email addresses associated with a particular domain or company. It uses a combination of web crawling, data analytics, and data enrichment techniques to provide users with accurate and up-to-date email addresses of individuals and organizations.
- Automatic Email Verification Check
- Domain Search
- Chrome Extension
- Email Finder
Apollo.io is a sales engagement platform that provides businesses with access to comprehensive data and insights on potential customers. It combines contact data, company data, and engagement data to help businesses identify and engage with potential customers more effectively.
- Over 200 mio Contacts in Database
- Company Data
- Engagement Data
- AI supported
ZoomInfo SalesOS is a sales intelligence platform that provides businesses with access to comprehensive data on potential customers. It combines contact data, firmographics, technographics, and intent data to help businesses identify and engage with potential customers more effectively.
- Over 170 mio Contacts in Database
- Firmographics
- Technographics
- Intent Data
Complete Comparison
Below you will find a deep-dive into the most important features of each tool. These form the basis for our final conclusion on which tool is best suited for which application. You will also find a screenshot of each tool, that gives you a first impression of what the respective tool looks like.
Hunter.io

Hunter.io is an email finder tool that allows users to find and verify email addresses associated with a particular domain or company. It uses a combination of web crawling, data analytics, and data enrichment techniques to provide users with accurate and up-to-date email addresses of individuals and organizations.
Key Features:
- Email Verification: Hunter.io verifies email addresses in real-time to ensure that they are accurate and deliverable.
- Domain Search: Users can search for email addresses associated with a specific domain or company.
- Email Finder: Hunter.io allows users to find email addresses based on first and last name and domain.
- Chrome Extension: Hunter.io's Chrome extension allows users to find and verify email addresses while browsing the web.
Pricing: Hunter.io offers a free plan that allows users to perform a limited number of searches. Paid plans start at $49/month and offer more advanced features and functionality.
Best Features
Pre-built websites
Muffin Builder
The grid
Header styles
Apollo.io
Apollo.io is a sales engagement platform that provides businesses with access to comprehensive data and insights on potential customers. It combines contact data, company data, and engagement data to help businesses identify and engage with potential customers more effectively.
Key Features:
- Contact Data: Apollo.io provides users with access to a database of over 200 million contacts, including email addresses, phone numbers, and social media profiles.
- Company Data: Users can access company data, including firmographics, funding, and news.
- Engagement Data: Apollo.io tracks engagement data, including email opens, clicks, and responses, to help users understand the effectiveness of their outreach.
- Sales Intelligence: Apollo.io uses data and AI to provide users with insights and recommendations on how to engage with potential customers more effectively.
Pricing: Apollo.io offers a free plan that allows users to access limited features. Paid plans start at $99/month and offer more advanced features and functionality.

Best Features
Pre-built websites
Muffin Builder
The grid
Header styles
ZoomInfo SalesOS

ZoomInfo SalesOS is a sales intelligence platform that provides businesses with access to comprehensive data on potential customers. It combines contact data, firmographics, technographics, and intent data to help businesses identify and engage with potential customers more effectively.
Key Features:
- Contact Data: ZoomInfo SalesOS provides users with access to a database of over 170 million contacts, including email addresses, phone numbers, and social media profiles.
- Firmographics: Users can access firmographic data, including industry, company size, and revenue.
- Technographics: ZoomInfo SalesOS tracks technographic data, including technology usage and installations, to help users identify potential customers who may be interested in their products or services.
- Intent Data: ZoomInfo SalesOS uses intent data to help users identify potential customers who are actively researching products or services similar to theirs.
Pricing: ZoomInfo SalesOS does not publicly disclose pricing information, but offers a range of plans to fit the needs of different businesses.
Best Features
Pre-built websites
Muffin Builder
The grid
Header styles
Summary
All three sales intelligence tools - Hunter.io, Apollo.io, and ZoomInfo SalesOS - offer valuable features and functionality to help businesses identify and engage with potential customers more effectively. The right tool for your business will depend on your specific needs and budget. If you're looking for an email finder tool with basic features, Hunter.io is a good choice. If you need a more comprehensive sales engagement platform, Apollo.io should be your choice.
Hunter.io
Hunter.io is an email finder tool that allows users to find and verify email addresses associated with a particular domain or company. It uses a combination of web crawling, data analytics, and data enrichment techniques to provide users with accurate and up-to-date email addresses of individuals and organizations.
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Apollo.io
Apollo.io is a sales engagement platform that provides businesses with access to comprehensive data and insights on potential customers. It combines contact data, company data, and engagement data to help businesses identify and engage with potential customers more effectively.
ZoomInfo SalesOS
ZoomInfo SalesOS is a sales intelligence platform that provides businesses with access to comprehensive data on potential customers. It combines contact data, firmographics, technographics, and intent data to help businesses identify and engage with potential customers more effectively.



