1) right click on message in Inbox list (Do NOT click the Message menu bar at the top, which is different!). 
   2) see menu that pops up, same as photo below. This menu needs editing/reordering.

There are several different menus presented when I try to act on ("Edit>") a Message. If I highlight the message in the inbox and right-click, I get the menu in the photo attached. My MOST frequently used menu item here is "Delete Message". As you can see it's buried deep in the menu that pops up. I would like to simplify this menu, e,g, to remove items I NEVER use (they will still appear in other places if I need them), and move the most frequently used menu item Delete Message to either the top or the bottom, possibly highlighted so it's easily found. How can I do this? Where are the menu items specified and how is their order in the menu determined? Is this an "about.." list or json file that I can access? Thanks! Steps to repeat: 1) right click on message in Inbox list (Do NOT click the Message menu bar at the top, which is different!). 2) see menu that pops up, same as photo below. This menu needs editing/reordering.