In standard mail-carrying configuration, the cabin has one swiveling seat for the driver/mail carrier, and a cargo capacity of 1,433 lbs over ice, and 661 lbs over water.
The function of the staff is meant to aid the shigofumi mail carrier by keeping track of senders, receivers, the delivery area, and supplementing other usual tasks.
Debates touched on such issues as changing the term stewardess to the gender-neutral flight attendant, fireman to fire fighter, mailman to mail carrier, and so on.