Subject and From field for saving cache file.
;; [number subject from date id references chars lines xref]
(insert (format "%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t\n"
(mail-header-number headers)
- (mail-header-subject headers)
- (mail-header-from headers)
+ (mime-fetch-field 'Subject headers)
+ (mime-fetch-field 'From headers)
(mail-header-date headers)
(mail-header-id headers)
(or (mail-header-references headers) "")