Please add ~amd64 to the following packages: mail-client/claws-mail-tnef_parse mail-client/claws-mail-spam_report mail-client/claws-mail-archive mail-client/clawsker
mail-client/claws-mail-spam_report-0.3.6 is already keyworded (KEYWORDS="~amd64 ~ppc ~ppc64 ~sparc ~x86"). ~amd64 added for the rest.