The Mail App
There are plenty of alternative email apps for iOS and iPadOS these days, but most people will use the default app at some point. It's a solid choice, too, with plenty of useful features. While it's accessible and (mostly) easy to use, it's worth going over how it works and what to expect.
Basic Layout
Once you've added your email account(s) in Settings, and you open the Mail app, you'll find yourself in a list of your email folders. By default, you'…