MAIL SLOT English meaning

Mailboxes & Mail Slots: Understanding Your Options outgoing mail slot If you have a door slot, then I have no idea of how you would do it though I just put my outgoing mail in the mail slot under the flap My mail gaelic luck slot png Outgoing Mail Slot Plug Kit for Private Access 4C Horizontal Mailboxes; Manufactured by Salsbury Industries; Ideal for private postal centers,

slot play free USPS regulations require a minimum of one parcel locker for every ten tenant compartments and one outgoing mail slot per unit; Factory installed integral trim