RoundCube and Spam Assasin

I am new to the forum so my apologies in advance if this is a re-post or posted in the wrong section.

I was wondering if anyone has integrated Round Cube email with SpamAssasin on a Cpanel/Whm managed server. I am interested in adding a "Message Is Junk" action for emails that will add the sender to the blacklist in Spam Assasin.

I have noticed that there are some plugins for RoundCube, but I am not sure if anyone has experience doing this and could point out the issues that may arise when integrating into a cpanel environment, and some best practices.

Thanks
James