In general, turning off email delivery on your server is not recommended as you wont have a way to receive system messages from the Nodalio server components.

You have 3 ways to turn off email sending on your server:

1. Via Nodalio Dashboard:
   • Log into the Nodalio Dashboard
   • Go to the services menu and locate Postfix
   • Disable it.
2. Via terminal/command line:
   • Login into the Nodalio Dashboard
   • Type in the command line:
     sudo systemctl stop postfix
     or
     sudo systemctl disable postfix
3. Use a WordPress plugin to stop emails going out of your WordPress install.

Shortcode format in the Nodalio Dashboard:

Shortcode result in the Nodalio Dashboard: