gnus: Mail Source Customization

 
 6.4.4.3 Mail Source Customization
 .................................
 
 The following is a list of variables that influence how the mail is
 fetched.  You would normally not need to set or change any of these
 variables.
 
 ‘mail-source-crash-box’
      File where mail will be stored while processing it.  The default is
      ‘~/.emacs-mail-crash-box’.
 
 ‘mail-source-delete-incoming’
      If non-‘nil’, delete incoming files after handling them.  If ‘t’,
      delete the files immediately, if ‘nil’, never delete any files.  If
      a positive number, delete files older than number of days (the
      deletion will only happen when receiving new mail).  You may also
      set ‘mail-source-delete-incoming’ to ‘nil’ and call
      ‘mail-source-delete-old-incoming’ from a hook or interactively.
      ‘mail-source-delete-incoming’ defaults to ‘10’ in alpha Gnusae and
      ‘2’ in released Gnusae.  SeeGnus Development.
 
 ‘mail-source-delete-old-incoming-confirm’
      If non-‘nil’, ask for confirmation before deleting old incoming
      files.  This variable only applies when
      ‘mail-source-delete-incoming’ is a positive number.
 
 ‘mail-source-ignore-errors’
      If non-‘nil’, ignore errors when reading mail from a mail source.
 
 ‘mail-source-directory’
      Directory where incoming mail source files (if any) will be stored.
      The default is ‘~/Mail/’.  At present, the only thing this is used
      for is to say where the incoming files will be stored if the
      variable ‘mail-source-delete-incoming’ is ‘nil’ or a number.
 
 ‘mail-source-incoming-file-prefix’
      Prefix for file name for storing incoming mail.  The default is
      ‘Incoming’, in which case files will end up with names like
      ‘Incoming30630D_’ or ‘Incoming298602ZD’.  This is really only
      relevant if ‘mail-source-delete-incoming’ is ‘nil’ or a number.
 
 ‘mail-source-default-file-modes’
      All new mail files will get this file mode.  The default is
      ‘#o600’.
 
 ‘mail-source-movemail-program’
      If non-‘nil’, name of program for fetching new mail.  If ‘nil’,
      ‘movemail’ in EXEC-DIRECTORY.