To open the Email app

Tap the Home Button > the Apps icon > Email .

OR
Tap the Home Button > swipe to the right panel > tap Email .

If you didn't set up your email account(s) when you first set up your new phone, the first time you open the Email app, a setup wizard opens to help you add an email account. After the initial setup, the Email app displays the contents of your Inbox.

NOTE

You can also add your email account(s) using the Accounts menu in the Settings app.