A pop-up ad is displayed in a new web browser window that opens above a website visitor's initial browser window. A pop-under ad opens a new browser window under a website visitor's initial browser window.:22 Pop-under ads and similar technologies are now advised against by online authorities such as Google, who state that they "do not condone this practice".
You’ll want to use email, blogging, and social media tactics to increase brand awareness, cultivate a strong online community, and retain customer loyalty. Consider sending personalized emails to past customers to impress or inspire them -- for instance, you might send discounts based off what they’ve previously purchased, wish them a happy birthday, or remind them of upcoming events.