. You can customise the mail program so that all your mail files are automatically held in one directory. These files are known as folders . To do this: . Create a directory to keep your mail folders in. Set the value of the environment variable folder to the pathname for this directory. To save a file to a folder in this directory, save the mail as usual, and append a + (plus sign) to the name of the file (folder) that the mail is to be stored in. Examples .