Top 2 Email Verification Software Companies $100M+ Revenue (October 2026)

Bellevue, Washington, United States

RocketReach is a bootstrapped contact-discovery and lead-intelligence platform founded in 2015 and headquartered in San Francisco. The company provides email lookup, professional profile data, and an API used by enterprise clients including Apple, Google, Chase, and Morgan Stanley. As of early 2017, RocketReach had accumulated 300,000 registered users and was generating revenue across two streams: consumer subscriptions and API access, split roughly 60 percent and 40 percent respectively. Cofounder Amit Shanbhag built the product without outside capital, keeping the team at approximately seven people while maintaining an estimated 80 percent gross margin. The company experimented with a lead-generation pilot before pivoting back to a self-serve productivity model, targeting sales teams as a de facto workflow tool. Shanbhag declined to disclose precise paying-customer counts or total revenue figures during the interview, though he confirmed the business was generating revenue in the millions. In August 2020, Brighton Park Capital made a majority-stake growth investment of 92 million dollars in RocketReach, marking the company's first outside capital. As of 2025, the company employs between 50 and 99 people.

Chester, United Kingdom

GBG is the leading expert in global identity and location tech, enabling safe and rewarding digital lives for genuine people, everywhere. For over 30 years, we have combined global data with our innovative technology to make sure that genuine people everywhere can digitally prove who they are and where they live. We are an essential ingredient that protects against digital crime, strengthens business resilience and drives responsible growth, at scale, across a diverse range of sectors. Today, our team of over 1,100 people serve more than 20,000 customers globally.