India is one of the forerunners in mandating e-voting by shareholders. It was first introduced by SEBI for top listed companies, and then codified in the Companies Act, 2013 (section 108). However, due to operational difficulties and delays, the MCA last week issued a clarification postponing the mandatory nature of the e-voting requirements. It has also clarified certain operational matters regarding the provisions of the Act as well as the Companies (Management and Administration) Rules, 2014. For further discussion, see here and here.
The matter of postal ballot (which covers e-voting) has already captured the attention of the judiciary as discussed here, where it was conferred a great deal of sanctity.
However, it is not clear as to whether SEBI has deferred (or will defer) the requirements under the listing agreement (clause 35B), which would be applicable to public listed companies.