How to check the size of an Exchange mailbox in Outlook


How to check the size of an Exchange mailbox in Outlook.


  • You must have a Sherweb hosted Exchange account.
  • You must have an Exhchange Outlook profile.

How to

Note: A warning will be sent to all Exchange users when their mailboxes are almost at full capacity (100Mb of space left). The server will then prohibit users from sending and receiving email.

If after deleting data from Outlook, the mailbox size is still large, it is advised to empty the deleted items folder from OWA. 


1) Open Outlook


2) Right-click on the Mailbox folder and then click on Data File Properties (Outlook 2013 shown)



3) In the General tab, click on Folder Size.



4) Click on the Server Data tab and you will see the size of your mailbox listed next to Total Size (including subfolders).



Note: Your subfolders are included in the size of the mailbox.


Feel free to contact us for any other questions.

Applicable to

All Sherweb Hosted Exchange accounts.