In either case, follow these steps:
At the bottom center of the screen, you should see the following program message:
___ message marked for deletion
Messages you want to delete will be marked with a letter D at the beginning of the message header on the Message Index screen.
Messages you mark for deletion will be removed from the Message Index screen when you quit the Pine Mail program or when you use the expunge feature (press the X key).
In either case, follow these steps:
Messages you mark for deletion will be removed from the Message Index screen when you quit the Pine Mail program or when you use the expunge feature (press the X key).
However, once you end your Pine Mail session, you cannot undelete a message.