Section 3C(21)(e) in State Bank of India General Regulations, 1955
(e)A notice or a document may be served by the State Bank on the persons entitled to a share upon death or in consequence of the insolvency of a shareholder by sending it through post in a prepaid letter addressed to them by name, or by the title of representatives of the deceased, or assignees of the insolvent, or by any like description, at the address, if any, in India supplied for the purpose by the persons, claiming to be so entitled, or until such an address has been so supplied, by serving the document in any manner in which it might have been served if the death or insolvency had not occurred;