To save the current message including its header, to a file, enter s followed by the name of the ``mail folder'' where you want the message saved. (A mail folder is another name for a regular file containing saved mail messages. At the start and end of each message in the file is a line containing the string ``^A^A^A^A''--four ASCII characters with value 1.) You can also save messages by specifying their numbers, individually, as ranges, or a combination of both. For example, s 1-5 8 11 myfolder saves messages 1, 2, 3, 4, 5, 8, and 11 in myfolder.
Each saved message is marked with an asterisk in the list of headers. When you quit from mail, saved messages are normally deleted from the system mailbox unless you hold them, or set the environment variable keepsave.
You can read a mail folder or your user mailbox by specifying
its filename using the -f option:
mail -f filename
See ``Organizing your mail into folders''.