I'm using Outlook categories to class email and contact.
Is there a way to search through category the same way than in GMail?
Something like "category=Work AND category=Germany".
This worked for me in Outlook 2010.
In the search Inbox (at the top of your message list Ctrl+E), type..
Although it 'works' to search for "category" without the colon, that does not actually find all docs marked with ANY category, for me. However this does the trick: "followupflag:followup flag". One may add a subsetting word to search for after that phrase, as well.