You can set up Safe Sender List in your Microsoft 365 (M365) account so that email sent from those email addresses listed in the Safe Sender List are always received in your Inbox.
Following is the setup procedure in Microsoft Outlook:
1. Open Outlook.
2. Click HOME at the top menu bar.
3. Under Junk heading, click Junk E-mail Options....
3. Click on the Safe Senders tab.
4. Click Add.
5. Type the email address or domain.
6. Click OK.
