Ordinary mail is delivered to the addressee or authorized agent at the Post Office or at the given address or in the Mail Box or the Post Box or Bag.
In storied buildings, ordinary mail of the following classes:
Letter (Envelope), Inland Letter Card, Post Card and Aerogram
Book, Pattern and Sample Packet
Acknowledgement Card and Registered Newspaper
will be delivered at the address only on the ground floor of the building. For other addresses in storied buildings, Mail Box should be provided on the ground floor at a place acceptable to the Post Office, with the address superscribed on it, for delivery of these classes of mail.
Persons at the same address may provide separate Mail Boxes, with the name and address superscribed on the Box.
Two or more addresses may have a common Box with the addresses superscribed on it.
Mail of sizes that do not admit of delivery into Mail Box. Parcel, and unpaid or insufficiently paid mail will continue to be delivered at the address.
Intimations for mail, to be receipted on delivery, may be delivered through Mail Box.