Caviar is an on-demand food delivery platform that provides food delivery from the best local restaurants promptly.
Caviar uses direct mail postcards to acquire new customers with marketing offers.
Source: Who's Mailing What!

See how the best marketers deliver results for their business with direct mail marketing
Over 10,000 businesses trust Lob to transform their direct mail into intelligent mail.

In this Best Direct Mail Campaign example, Sephora uses a self mailer to promote the Spring Insider Savings Event.

In this best direct mail campaign, Ilia uses a direct mail postcard with a 1:1 promo code to motivate existing customers to make a repeat purchase.

Eyebobs uses direct mail self-mailers with an eye chart to test your eyes as a clever way to engage readers to purchase eyeglasses.