Here’s a simple way to change your default MTA on CentOS:

# alternatives --config mta

There are 2 programs which provide 'mta'.

  Selection    Command
-----------------------------------------------
*+ 1           /usr/sbin/sendmail.sendmail
   2           /usr/sbin/sendmail.ssmtp

Enter to keep the current selection[+], or type selection number: 2

# sendmail -V
sSMTP 2.61 (Not sendmail at all)

pip freeze --local | grep -v '^\-e' | cut -d = -f 1  | xargs pip install -U

To activate God Mode, right-click the desktop and select New > Folder. Highlight this folder, press F2 and name it:

GodMode.{ED7BA470-8E54-465E-825C-99712043E01C}