You can quickly control this state from your keyboard, which helps with quick clean up: Outlook also remembers which groups are expanded and which are collapsed when you close. Outlook groups your mail by time period groups: Today, Yesterday, Last Week, and so on. Similarly, Outlook also remembers the state of your Reading Pane. It expands and collapses the appropriate folders and selects the Inbox, or the folder you've set at the default. This doesn't have anything to do with the selected folder upon launching - Outlook does both. Outlook then displays the same arrangement the next time you launch it. Outlook remembers which folders are collapsed and which are expanded, when you shut down. Changing this setting will save you a click a two, if you normally go straight to a folder other than the Inbox.ĭon't confuse this behavior with the state of expanded and/or collapsed folders.