It depends if you have ftp access. If so, just use Nautilus to do a good deal more than any other ftp client. I also use it and Bluefish to edit pages on my websites.
There should be a Mail folder where you can view and delete any and all files.
I find it so much easier than File Manager in cPanel.
If you want to delete all the messages, you can simply truncate the mailbox file for a user with the following command:
(the greater than sign is not a prompt: you are in effect redirecting the output of nothing to the file, which will truncate it).
Run mail in a terminal. Press d 1-. This will delete those messages.
Removing files for managing mail is like adjust the volume of your tv with a hammer. It may work, but it is not optimal and far too brutal.
It depends if you have ftp access. If so, just use Nautilus to do a good deal more than any other ftp client. I also use it and Bluefish to edit pages on my websites.
There should be a Mail folder where you can view and delete any and all files.
I find it so much easier than File Manager in cPanel.