What is the difference between Inside In-app message and Outside In-app messages? There is a thin line difference between Inside In-app message and Outside In-app message. They both have different functionality according to the kind of message you want to send to your customers- Inside In-app messages (In-App) Inside messages will be directly shown inside your Ai-App box. It’s perfect if you want to inform customers about new offers or discounts on your website. You can also set a time-interval to all your inside app messages. It will be shown when your customers actually have your website opened. Outside In-app message: Outside app messages notify customers that you have sent them an in-app message. When a customer clicks the notification they are directed to your in-app message. Outside app messages are great for starting conversations with customers.