A retention period defines how long to keep email in certain folders. Some system-level folders, also known as default folders, have retention policies that cannot be modified. A similar retention period applied for File Storage.

 

Office 365 email retention

The retention period defines how long emails are kept in certain folders and are automatically enforced.

Recovering Deleted Items

Items that have been removed from the Deleted Items folder can be recovered up to 30 days.

  1. Right-click the Deleted Items folder in the Navigation Pane.
  2. Click Recover Deleted Items.
  3. Select the item you want to recover by clicking it in the Recover Deleted Items list.
  4. Click to recover the item or to purge the item.
  5. Select the folder you want to recover the item to and click Recover.

Note:  After you purge an item, you can not recover it using Recover Deleted Items.

Office 365 storage retention

The retention period for deleted items in OneDrive is 30 days. The recovery of these items are also self-serviced.

Recovering Deleted Items

  1. Go to the OneDrive website.
  2. On the left pane, tap or click Recycle bin.
  3. To restore all items, tap or click Restore all items. To permanently delete all items, tap or click Empty recycle bin. To restore or permanently delete individual items, pick them by selecting their checkboxes.