Efu marked only 'Goyo' (official business) in ink was attached to the baggage sent from the Imperial Court or the Edo bakufu accompanied by the Imperial crest or the family crest of Tokugawa, respectively, while other senders wrote '...Goyo' (official business of...) or '...Kachu...Goyo' (...family's official business of...) on efu accompanied by their own family crests.
朝廷・幕府のものは、菊や葵の御紋とともに墨書で「御用」とのみ書かれ、その他の場合は、紋章とともに「○○御用」「××家中÷÷御用」などと記された。