04 December, 2015.
Sarai Kale Khan,
Subject: Change of postal address
This is to inform you of the change in the postal address of the company headquarters of XYZ company from 21, Tughlaq Road, New Delhi to 33, Akbar Road, New Delhi with effect from 1 January, 2016. You are requested to redirect any mail posted to the previous address.
CEO, (ABC company)