There is a new e-mail notification client released in 2022 R2 (V12 patch 30), and it's pretty.
The set up is found on the menu as below. (Administration > Servers > Notification server )
The set up is a breeze
There are just two general parameters SYRMAIL and YRMAILSRV which I set up as below on my folder. Save and re-log into X3
On the Notification Server setup function, Test your configuration to make sure things are ok.
You should get a pretty e-mail in your e-mail inbox (Outlook in my case)
Now you are ready to set up the workflow notification at the Workflow rules function, and tick "Use theme" to get the pretty notification.