cPanel 104 has introduced a couple of useful changes to the Roundcube webmail client. First, it now has a dark mode that is easily toggled via the icon in the lower left corner. You can see what both of these modes look like below.
You can now also train SpamAssassin directly from within the Roundcube webmail client. When selecting any email outside of the Junk folder, you have the option to select “Junk” which will move the email to your Junk folder and submit it to SpamAssassin for local spam training.
Similarly, if you select an email in your Junk folder, you’ll have the option to select “Not Junk”. This will move the email to your inbox and submit it to SpamAssassin for local ham (not spam) training.
If at any point you make a mistake, you can simply locate the email and select the opposite action.