This is the good stuff. I am using this for quite a while and I figured
someone else might find it useful as well, therefore I have released it in both
free and paid versions.
Download
the FREE LITE version here.

Let's say you want to be notified via e-mail when your HEVC encoding has finished. Browse for x265.exe, then in the command, set your CLI sendmail command (something like bmail for instance) then start monitoring. When the encoding finished, the command is then run. The command can be any program you wish, so get creative. I am running my encoding on a different machine so this sends me an e-mail when it's done.
Have fun and if you find it useful, please consider registering it for $5. The difference between the Lite and Full version is that in the Lite, you cannot load and save sets and a you get a cute message everytime you start the app. Good enough for occasional use.
Thank you!
© Alex Dragusin. All Rights Reserved.