Toggle Unread Threads and Mark as Read as keyboard shortcuts

I love Caprine! This is a great application.

Would it be possible to add a keyboard shortcut to the "Toggle Unread Threads" menu item, as well as a keyboard shortcut to mark a given conversation as read/unread? My usual workflow involves marking a conversation that I need to reply with as unread (or with a star in e.g. Gmail) so it would be really convenient to be able to do the same thing with Messenger threads!

Gmail does SHIFT+I for mark as read and SHIFT+U for mark as unread, but I'm sure I could relearn another mapping. It also looks like CTRL+SHIFT+T is already "Always on Top" but something else could work there too.

Thank you!