The most useful hidden software features include text expansion for repeated phrases, search operators like quotes and the minus sign to find files…
If you type your email address, your phone number, or the same canned reply more than a few times a day, you're wasting real minutes.
Plain search is fine until you have thousands of emails or files.
Context menus change depending on what you right-click, and they hide some of the most useful commands in any program.
Default toolbars are designed for the average user, which means they're wrong for almost everyone.
Read the complete breakdown, fixes and what happens next.