There are tons of rules and if you've been around the block and used Outlook for a while - you've maybe had some rules setup - like rules to file certain messages. I'm pretty sure you haven't heard of these. These couple of Outlook rules I'm going to show you are so helpful when it comes to decluttering your inbox and being efficient in Outlook.
Depending on how many emails you send and if you send emails to large groups of people - this can be life changing. Lots of people send mass emails inside their company and get 100's of our of office replies but even if you only send to groups of 5-10 you probably get a handful of Out of Office replies. They can be helpful when sending to an individual but when you receive large amounts, they can really clutter up your inbox. You can either file them and look at them at set intervals or just have them deleted.
If you use the calendar, most likely you also create meetings and receive responses to the meeting requests. Depending on how many people are invited to your meetings and how many meetings you create - these replies can literally fill your inbox in a matter of minutes. Why not automatically file them (or even delete them)? You can always check the actual meeting to see what people responded or go check the replies in a separate folder when you need to. To setup a rule that AUTOMATICALLY files these replies - use these steps.