Open the Squirrel Webmail https://mail.vcn.bc.ca/src/login.php
Checking the Used Webmail Space
Go to Folder Sizes link.
In this example, the total used space is 41k.
Reducing the Webmail Used Space
1. Inside a folder, select the emails to be deleted and click on Delete button. This operation will move them to Trash folder. This example is using Spam folder.
*** Important: The operation in the next step cannot be reverted and the emails will be definitely be deleted.
2. Go to to Trash folder and select the emails to be permanently deleted, so click the Delete button.