+;; Create custom spam status header and show in message view
+(add-to-list 'mu4e-header-info-custom
+ '(:spam-status .
+ ( :name "Spam-Status" ;; long name, as seen in the message-view
+ :shortname "Spam" ;; short name, as seen in the headers view
+ :help "The Spam status" ;; tooltip
+ ;; uses mu4e-fetch-field which is rel. slow, so only appropriate
+ ;; for mu4e-view-fields, and _not_ mu4e-headers-fields
+ :function (lambda (msg)
+ (or (string-join (seq-take (split-string (mu4e-fetch-field msg "X-Spam-Status") " ") 2) " ") "")))))
+(add-to-list 'mu4e-view-fields :spam-status)
+b