How do I request a new Exchange account, or why am I getting an error that my mailbox doesn't exist?
An Office 365 mailbox will be created for you when you create your NetID through UI Hire or claim your NetID through NetID Claim. The Office 365 mailbox will be ready to use about 2 hours after the NetID is created/claimed. Office 365 mailboxes can be accessed through https://outlook.office.com.
If you are a visiting scholar it will need to be manually created, please have your department contact the Help Desk and request it.