If you spend a lot of time working with e-mail on your iOS device, especially across multiple accounts, you may find it handy to know that you can actually now customize your main mailbox listing. With iOS 7, you can change the order of the default smart mailboxes such as the universal inbox, and VIP list, as well as enabling additional types of smart mailboxes.
Simply tap the “Edit” button in the top-right corner of the Mailboxes screen to make changes.
Pre-defined smart mailboxes are included to group unread messages, flagged messages, VIP list items, messages with the user’s e-mail address in the To or CC line and messages with attachments. If you have more than one mail account configured, you’ll also see folders for aggregating all drafts, sent items, and/or trash across all of your mail accounts.
You can also add individual mailbox folders to the main screen to saving you from having to dig into the account-specific folder hierarchy for folders you frequently access.