M365 OneDrive (How To) Save Attachments from Outlook to OneDrive
This article explains how to save attachments in the Outlook on the web to your UWM OneDrive for Business space.
Outlook on the Web (OWA)
When viewing the email that contains the attachment, click on the drop down arrow next to the attachment and select Save to OneDrive - University of Wisconsin Milwaukee.
The attachment will now be in your UWM OneDrive.
Outlook for Windows
When viewing the email that contains the attachment, click on the drop down arrow next to the attachment and select Upload. Then select OneDrive - UWM - (your ePantherID)@uwm.edu.
The attachment will now be in your UWM OneDrive space.
Outlook for Mac
When viewing the email that contains the attachment, click on the drop down arrow next to the attachment and select Save As... 
Select OneDrive - UWM as your destination in the left hand column. Finally, click Save.
The attachment will now be in your UWM OneDrive space.