OIT Home > OIT Knowledge Base Search Knowledge Base: What is my Office 365/Volmail email quota and what are the folder count recommendations? Email Quota Your Volmail/Office 365 mail quota is 50 GB. To check your quota: Log in to http://office365.utk.edu and choose the Mail app. Go to the upper right corner and choose the Gear/Settings button. Under My app Settings choose Mail. On the left-hand side, click on General > My account. Mailbox usage is on the My account page. Folder Count Recommendations Microsoft recommends keeping your top-level Inbox, Sent Items, Calendar, or Contacts/People folders (subfolders excluded) below the recommended item counts below. You may experience slow or sluggish performance if the item count exceeds Microsoft's recommendation. Inbox: 20,000 messages Sent Items: 20,000 message Calendar: 5,000 items Contacts/People: 5,000 entries Need more help?