Email-base of 5000 American IT-companies

We're a start-up and currently we're looking for a specialist, who can develop an email-base of around 5000 American IT-companies, which develop web and mobile applications, cloud software, embedded systems, IoT apps and blockchain solutions. And it would be wonderful if these companies were interested in QA/Testing services and specialists. If you're such a specialist and want to work with us, feel free to contact us:)