From the Message List:
- Enter or Ctrl-O (open message)
- Esc (close preview pane)
- Up/Down Arrow (move selection)
- Ctrl-A (select all)
- Ctrl-R (reply)
- Ctrl-F (forward)
- Ctrl-P (print)
- Ctrl-Shift-R (reply all)
- Del (delete message)
- Ctrl-R (reply)
- Ctrl-F (forward)
- Ctrl-P (print)
- Ctrl-Shift-R (reply all)