Apollo.io

Apollo.io has become one of the most popular tools in the outbound GTM stack because it combines two things teams usually buy separately: a B2B contact database and an email sequencing tool. Instead of paying for ZoomInfo for data and a separate tool for sequences, you get both in one platform at a fraction of the cost.

The database includes over 275 million contacts with email addresses, phone numbers, job titles, and company information. Search filters let you narrow by industry, company size, technology stack, funding stage, job title, and more. The Chrome extension works on LinkedIn to pull contact info and add prospects directly to sequences without leaving the browser.

The sequencing engine handles multi-step email campaigns with automatic sends, manual email steps, call tasks, and LinkedIn touchpoints. You can set up branching based on whether a prospect opens, clicks, or replies. For teams running straightforward outbound sequences, it covers the core use cases.

Where Apollo falls short is on the sending infrastructure side. Emails are sent through shared infrastructure, which means your deliverability is partially dependent on other Apollo users on the same IP ranges. High-volume senders who care deeply about inbox placement rates will want dedicated sending infrastructure from a tool like Instantly or Smartlead instead.

Data accuracy is solid for US-based companies but can be inconsistent for European and APAC markets. Email verification is built in, but bounce rates tend to be higher than what you would get from a premium data provider like ZoomInfo.

The free tier gives you 10,000 email credits per month, which is enough to test the platform and run small campaigns. The Basic plan at $49/user/mo increases credit limits and adds sequence automation. The Professional plan at $79/user/mo adds intent data and advanced reports.

For teams in the $0-79/user/mo range that need both data and outreach, Apollo is hard to beat on value.