Email Accounts Showing Incorrect Disk Usage

Symptoms

The mail usage for the email accounts in the "Email Accounts" section is not updated and is not accurate after removing emails from the accounts. 

Description 

 The Email address shows an incorrect of disk space, caused by the maildirsize file for the email accounts not having been updated yet. 

Workaround

You will first want to move the maildirsize files out of the way as the below script will not overwrite the files. 

find /home/CPUSER/mail/ -type f -name maildirsize | while read line; do mv -v $line{,.bak}; done

You will want to run the following script from root with the cPanel user in question to have them regenerate all of the maildirsize files and ensure their accuracy within the WHM. 

/usr/local/cpanel/scripts/generate_maildirsize --user=CPUSER --confirm

There is also an internal improvement case that has been opened on the issue.