Default to Partial Word Search
Users should be able to search partial words in Outlook quickly without having to type extra characters to do so. In previous versions of Outlook a user could click one of the Refine options - "From", "Subject", et al - and the search operator would appear in the search box with parentheses inside which the user could type a partial search term and receive results for anything including that partial term. In 365 however, when a user clicks a Refine option, the search operator appears with quotes instead of parentheses. This causes partial search terms to return incomplete results or, more commonly, no results at all. This forces the user to press more keys (either manually typing out the full operator plus a colon or clicking the Refine option then deleting the quotes and replacing them with parentheses) in order to search a partial term which completely defeats the purpose of having the quick Refine options. Either the Refine buttons should default to partial word searches or users should be able to customize the behavior of those buttons.
Agreed with the above. The default should be from:(Sender Name) not from:"Sender Name".