The email folder began to weigh 5 GB, how to clear it and is it worth it?

Question

Network administration

When I started to backup the site, I found that the mail folder weighs 5 GB, how to clear it or all the files are needed there

Answer 1

This has nothing to do with your site, these are mailboxes created by you in the ispmanager panel.
Your site is located in the www/site_name directory.
Everything above is the panel's service files for your account.