BeatWare Mail-It: Fly through unwanted mail
Posted on September 9th, 1997 by shacker
To delete the currently displayed message and display the next message in the same window, hold down the Option and Alt keys and press either the up arrow (previous message) or the down arrow (next message) on your keyboard. Nail this shortcut and you’ll be able to rip through spam and other net noise without even blinking.