MCA wide Circular No. 39/2020 has clarified that it has been decided to allow companies to conduct their EGMs through VC or OAVM or transact items through postal ballot in accordance with the framework provided in the aforesaid Circulars upto 30th June, 2021.
http://www.mca.gov.in/Ministry/pdf/GeneralCircularNo.39_31122020.pdf