What is the email Id of Sunil Bharti Mittal, the CEO and MD of the Bharti Group?

If anyone knows, can you help me with the email id of Sunil Bharti Mittal, or Rajan Mittal, of the Bharti Group (based in India) that owns Airtel, amongst other businesses?|||Not sure but BOT nay BOT BOT Achay Hey .|||sunil.mittal@bharti.com