HTC Rezound User Manual page 209

Up to 15 email accounts can be shown in the unified inbox.
Switching between different views of your inbox
If you have lots of email messages, it may take you some time to browse
through the long list and find a single email or related email messages. Use
the tabs of the Mail app to sort your emails into different categories.
To skim through your email messages easier, tap one of the following tabs
to change the view of your inbox:
Received
Displays email messages as individual items.
Thread
Displays email messages as conversations, grouped according to the
subject line. Tap a subject in the list to show the email conversation.
Favorites
Displays all email messages from a contact group. To choose which
contact group to display, press MENU
a group.
Unread
Displays unread messages.
Marked (Exchange ActiveSync only)
Displays all flagged messages.
, tap View, and then select
Email 209