Per USC’s Acceptable Use Policy , email messages stored in default system folders are subject to a 16-month retention policy. You may use top-level personal folders to store select messages beyond the 16-month limit.

Additional Help

If you need assistance with creating and managing email folders in Microsoft Office 365 (or, if applicable, your school’s or unit’s local email system), please contact your school’s or unit’s IT support staff. To find your school or unit’s IT staff, visit itservices.usc.edu/school-list. You may also contact the ITS Customer Support Center at 213-740-5555.