Do we re-target potential or existing customers
Retargeting campaigns remind your website visitors of your products and services after they leave your website without buying. After visiting specific pages, it allows you to retarget them and show your visitors relevant visual or text ads when they visit other websites.

"It turns out that 97% of people who visit your site for the first time leave without buying anything, and then they’re lost forever unless you can bring them back."

-MailChimp