If your organization's email service supports it, you can use the Focused Inbox. This tries to separate important emails from less-important ones.
Click the View tab.
Click the Show Focused Inbox button.
The inbox is sorted into two groups, Focused and Other. Outlook will sort emails from people you email frequently into the Focused inbox, while sorting emails from other people, and automatically-generated email notifications, into the Other inbox. It will also learn your habits over time.
If an email was sorted into the wrong inbox, you can move it to the correct one. This will also help train Outlook to sort future emails better.
Right-click an email.
Select Move to Focused (or Other), or Always Move to Focused (or Other).
Selecting Move to Focused will move the selected email to Focused, while selecting Always Move to Focused will move every email from the sender to Focused every time.
If the criteria in the Sort menu aren't quite what you're looking for, or you'd rather sort by multiple criteria at once, you can use Outlook's advanced sort feature.
Click the View tab.
Expand the Current View group, if necessary.
Click the View Settings button.
Click Sort.
The Sort dialog box appears.
From here, you can choose multiple sort criteria and select either Ascending or Descending order.
Change the sort settings.
Click OK, then click OK again.
Outlook Sort Options
Arranges messages by date.
Arranges message by sender.
Arranges messages by recipient.
Arranges messages by file size.
Arranges messages alphabetically by subject.
Arranges messages by type.
Arranges messages by whether or not they have an attachment.