This guide assumes you've already logged in to cPanel.
Now that you're in cPanel, you can modify the quota size of your email accounts, to do this:
1) Click the Email Accounts icon
2) Click “Change Quota” for the desired email account
3) Enter the desired mailbox quota size and click the “Change Quota” button.
Note: We don't recommend setting mailbox sizes to “unlimited” as this could cause service disruptions if you exceed your hosting account disk space quota.
Note: When email accounts are created in cPanel, the default size is 250mb. This size should be sufficient for light to medium email usage.
Change your email account disk space quota in cPanel
To make it easier to get in touch with us, from the 24th of March 2016 all support tickets will need to be submitted from your Crucial Control Panel.