Both our clients and brands everywhere are interested in using digital media to win new customers and increase their customer count. They always ask us which channel is most successful - we looked across every promotion that has ever been run through our system to answer the question.
Your website is your greatest source of new customers - over 50% of total new customers acquired came from a business's website.
Email, interestingly is an incredibly powerful way to win new customers. When you send an email blast, consumers forward that message to friends, family members and co-workers they think might care about it. BUT, if you don't have a way to collect contact information from those new people, you don't benefit (hint: Privy can help).
Lastly, social media generates some new customers though many customers who sign up for promotions found on social media tend to have already been customers.