But some executives don't really place primary duties on acquiring lists of people as much.
"We don't focus on acquisition anymore," says Sarah Buckenberger, director of customer acquisition, BabyCenter.com, at the Email Insider Summit. "I know I'll be getting a lot of emails about that especially that's part of my title. [Rather] we are focusing on the customers."
Buckenberger says more important is providing the right message at right time in the right place.
"Moms want to interact with us in a different way. Putting out the same message just doesn't work."