Folder a set of messages. Folders exist only if they contain messages. You may include a filename containing the message by entering the file's name after the send command. You can actually mix Internet addresses and regular local addresses as addressees on the same message. Just separate the addresses with a comma.
Folders only exist if they contain messages.
Once you delete all the messages from a particular folder, the folder itself disappears. Read the message you wish to move onto your screen. Read the message you wish to delete. Read the message to which you want to reply. You are put into the editor to work on the message.