To keep your Outlook mailbox organised, did you know that you can create Mailbox rules to automate what happens to an email that arrives into your Inbox?
To learn how, see the simple steps on the attached document.
Also, Outlook also a pretty useful feature whereby you can specify retention rules on individual emails, or against folders which then affects all emails moved to that folder.
So, if you want to keep the number and age of certain emails down from a housekeeping or GDPR data retention policy perspective, then follow the steps on the attached.
And remember, there are links in the knowledge base that can take you to training videos for all Microsoft products where you can find more tools to help yourself be more productive.