The Messaging app on the Exhibit II's dock handles all the phone's SMS and MMS messages. Messages are listed in order of the date received, and are grouped into conversations by contact. The icon on the dock displays the number of unread messages.
Typing text messages in portrait mode felt cramped, due to the Exhibit II's small screen. Switching to landscape mode was much more comfortable. Thankfully, TouchWiz provides Swype, which makes drafting messages much easier, especially in portrait orientation. We recommend using it.
Email communications are kept separate from text messages via an E-mail app. It can easily be synced with Gmail, Yahoo! Mail, Apple's iCloud, Microsoft Exchange, or any POP or IMAP mail services.
The Email app does a commendable job of organizing mail from multiple accounts, using colored icons to differentiate mail to different addresses, and breaking up messages by date received.
Email can be browsed by separate inboxes, or all in one place. The search function efficiently navigates multiple inboxes.