High-quality U.S. customer email data collection

I am looking to hire an experienced freelancer to collect high-quality customer emails in the U.S. for a marketing campaign. Specifically, I need the freelancer to collect contact information (such as names, emails, phone numbers) for U.S. customers. All data should be collected from within the U.S. and not from any other country. The purpose of the data collection is to have accurate information to use in a marketing effort. The freelancer should be proficient in gathering data from sources such as social media, web searches, and other online resources. The end product should be a complete list of accurate customer emails to target for the campaign.