In Microsoft 365 Offboarding crate, there is a LOVELEY option to assign the offboarded user's OneDrive. When selected, an email with the shared folder Offboarding_Transfer goes to the person with access granted to the offboarded's OneDrive. This can get confusing for managers who have access to multiple disabled user's OneDrive folders. Using mailNickname prefix will differentiate user folders and change the subject in the email with clients' familiar naming convention. For Example, the manager of John Doe, JDoe@contoso.com , will have JDoe_Offboard_Transfer folder was shared with you.