The Accounts list
The Accounts list in the Email Menu displays all of your email accounts.
Open the Email app. Tap the Menu icon 
to display a list
of all of your email accounts and their folders. You can also swipe
horizontally from the left side of the screen to open your Accounts
list.
to display a list
of all of your email accounts and their folders. You can also swipe
horizontally from the left side of the screen to open your Accounts
list.A identifying color is displayed on the left of each account. Tap an account to toggle between displaying and hiding its folders. The number of unread mail is displayed next to each account's Inbox.