You'll won't get the new features every month and can avoid the new design for a few months. If you want to revert to an older version, set this registry key to drop to the semi-annual channel. With Use Tighter Spacing enabled, more messages display in the message list. This screenshot shows the new message header with wider spacing, the header with tighter spacing on, and the older message header for comparison.
This will remove the padding around the To, CC, and Subject fields and also in the Message list, returning the header area to the original size, although without the outlines around the To, CC, and Subject fields. When Tighter spacing is enabled, the button will be highlighted. Look in the View tab for Use Tighter Spacing. Fortunately, Microsoft included an option to reduce the wasted space. This is due to some changes to the 'new' Outlook interface, in part to make it more touch friendly, with elements farther apart and more padding. What happened and how do I get rid of all that annoying white space? There is way too much white space between the messages in my inbox and the To/CC and subject area in new messages is huge. As Outlook updates are installed this week I'm seeing a lot of questions that go something like this:
