Your Mail app can sort your emails into different categories, but you don't have to use them if you don't want to.

The iPhone Mail app is a versatile and powerful tool for managing your emails effectively. With its advanced features, supported by Apple Intelligence, it enables you to streamline your inbox ...

and macOS 15.4. The latter two updates introduce Apple’s big Mail app redesign to the iPad and Mac. Late last year, iOS 18.2 launched big changes for Apple’s built-in Mail app on iPhone.