Costco Wholesale Corp.

Costco used the front cover of its January member mailer to offer members $5 off Colgate-Palmolive's Colgate Optic White High Impact White toothpaste and new Colgate 360 Advanced Optic White toothbrushes.

From Retail Leader, Jan. 9, 2017:

From Progressive Grocer, Jan. 12:

From Retail Leader, Dec. 6:

From Consumer Goods Technology, Dec. 13:

Costco used a Nov. 21 email to plug its recently launched CostcoGrocery same-day delivery service powered by Instacart as a way to order groceries for Thanksgiving meals.