@emc
I think this is not possible. In your example:
FlipBack=Delay, 5000 & Delete permanently
FlipBack , FlipBack=Delay, 2500 & Send queue mail
FlipBack , FlipBack , FlipBack=Delay, 1500 & switch to previous page
By pressing "FlipBack , FlipBack , FlipBack" (three clicks with left button when right is on hold), You simply should get triple action instead of one action.