We were having an issue where spams emails were sent from single cpanel account

We could not suspend the account and disable emails

So the solution to this was to keep website online and disable only emails

we use the below method to disable emails for a single cPanel account.

SSH to server and use below steps to disable cpanel for any account

The newwebho is the cpanel user name

root@online [~]# chmod 0 /home/newwebho/etc/
root@online[~]# chattr +ia /home/newwebho/etc/
root@eu [~]#