mailx -f filename
Using the example above, you would read the file ~/memos/finance by typing:
$ mailx -f ~/memos/finance
You can read letters saved in a folder with a similar command--just use the + instead of a pathname. For example, to read the letters in the folder projects, you would type:
$ mailx -f +projects
This command starts mailx in the file or folder designated. Only headers for the letters in the file or folder are displayed. Select a letter to read by typing its number at the mailx prompt and pressing Return.
|& folder +foldername|
To return to your mailbox, type this at a mail prompt: