7.4.13.1 Unix Mail Box
The nnmbox back end will use the standard Un*x mbox file to store
mail. nnmbox will add extra headers to each mail article to say
which group it belongs in.
Virtual server settings:
nnmbox-mbox-file ¶ The name of the mail box in the user’s home directory. Default is
~/mbox.
nnmbox-active-file ¶ The name of the active file for the mail box. Default is
~/.mbox-active.
nnmbox-get-new-mail ¶ If non-nil, nnmbox will read incoming mail and split it
into groups. Default is t.