How to submit App Review for page_messaging permission

#1. CartBack

“Hello,

I use “Checkbox Plugin” (https://developers.facebook.com/docs/messenger-platform/discovery/checkbox-plugin) to remind my customers of their abandoned carts.
Please test it here: [Your single product page test link]
Please opt in to the checkbox, then click Add-to-cart. You will receive reminder messages via Facebook Messenger.

Kind regards,

[Your name]”

Screenshot Example: