Abstract: A calendar and mail sorting structure which includes a series of monthly calendar sheets joined to a bottom sheet member by a binding along top edges of the sheets and with the sheets being rotatable on the binding enabling each sheet to be successively rotated into a front viewing position. Each of the sheets have a series of rows of slots. Indicia is mounted on front sides of the calendar sheets in adjacency to the slots for viewing when each sheet is successively rotated into the front viewing position at a front side of the calendar. Mail supports are mounted on the calendar and mail supporting structure between the bottom sheet member and the current monthly calendar sheet for supporting mail from behind the current monthly sheet when mail is inserted through the slots from a front viewing position of the current monthly calendar sheet while leaving a part of the mail protruding from the slot at a front side of the current monthly calendar sheet.