Hi dear,
You can set up mailbox rules in your mailbox to forward different messages to different folders:
1. Click “Rules - create rule“ at the top of Outlook client .
2. Click Advanced Options
3. Select a condition “with specific words in the sender’s address” and enter the external domain name you will receive, for example: “outlook.com”,”gmail.com”..
4. Click Next
5. Select a Action “move it to the specified folder” and click next
6. If there are no exceptions, please save this rule directly and select it“Run this rule now on messages already in ‘xx’”
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread