Publishing As New Brands Join Instagram Checkout, Users Get Notified via Email Messages encourage users to shop and check out within the app Promotional emails alert users to new brands that are part of Instagram Checkout. Instagram By Ann-Marie Alcántara December 30, 2019 Instagram continues to add new tools to its Checkout feature, which is still in closed beta. Ann-Marie Alcántara @itstheannmarie annmarie.alcantara@adweek.com Ann-Marie Alcántara is a tech reporter for Adweek, focusing on direct-to-consumer brands and ecommerce.