Using Outlook Categories to Actually Find Things Again
A five minute setup that makes color coding worth using
By Shehryar Hassan, Microsoft 365 & Azure Consultant
If you've ever stared at an inbox full of gray rows and thought you really should color code this, you're not alone. Outlook has had categories for years, but most people never turn them on because the default setup looks more complicated than it is.
Categories are just colored labels you can stick on emails, calendar items, and tasks. Once you set them up right, you can scan a folder in two seconds instead of reading every subject line.
Setting up categories that actually stick
Open any email, right click it, and go to Categorize, then All Categories. Rename the default colors into something you'll remember. I use blue for "waiting on someone else," red for "needs a reply today," and green for "FYI, no action needed." Anything more than five or six categories and you'll stop using them within a week.
Once your categories are named, assign one with a right click, or better, set up Quick Click under Categorize, Set Quick Click. Quick Click lets you tag a message with a single click on the category column in the message list, which is the only way this becomes a habit instead of a chore you skip when you're busy.
Making them useful, not just decorative
Categories only pay off if you can act on them afterward. Add the Categories column to your inbox view (right click a column header, then Field Chooser) and sort by it. Now everything tagged "needs a reply today" sits together, no matter when it actually arrived.
The same categories work on calendar events and tasks, which is where they get genuinely useful. Tag recurring meetings you could skip in a pinch with one color, and travel or out of office days with another, so a glance at your week tells you more than the event titles alone ever could.
One thing worth knowing: categories are local to how you view your mail, not a filing system. They don't move messages anywhere, and if you manage a shared mailbox, categories can behave differently depending on whether people are using classic or new Outlook. Test on a handful of messages first if you're rolling this out for a team, not just yourself.
Once it's set up, tagging a message takes maybe two seconds, and it's the fastest change I've made that actually cut down on re-reading the same emails three times trying to remember what they were about.
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