Run Command on new message
There used to be an option to run a command on new messages but on 1.3.3 I can't find anything of the sort. The machine I run this on has no audio outside the Piezo Speaker so I typically run a script that triggers some fun things with the beep command.
Of course 5 seconds after opening the issue I found I can do this via a plugin (triggers). Searched the docs, online to no avail. Just silly random poking around yeilded more than actual reading and research.