For Instagram channel, below type of messages can be send on the DM channel

Send simple message or media to your users.

Messages can also have floating buttons.

An Instagram carousel is a post that contains up to 10 photos or videos.

Why use Instagram carousels?

Carousels are a great way to tell a story, share multiple products or services, or showcase a variety of content.

Add a list of products and define the button CTA as well

Cart info message block - For end to end checkout flows, this cart info should come just before the payment step