Have Pine send mail to the Trash
Pine users can simulate the function of other mail clients’ ability to move messages to a trash location upon delete. Set up a filter by going to (M)ain menu, (S)etup, (R)ules, and (F)ilter. (A)dd a new filter with your choice of name or description. Have it set so that the Current Folder Type is set to the INBOX and that the condition is set to “Message is Deleted”. Set the action to move the file to the path of your trash folder.
Note that this rule is set up for the INBOX alone. If you were to set it up for all folders then you would run into trouble should you try to delete files while in your trash location.