"On my 91st birthday, 14.40 lakh cadres and public across the globe sent their greetings to me through short messaging service (SMS), Facebook and through my twitter accounts", he said in a party statement.
"Your greetings are encouraging and are motivating to my public life. I whole-heartedly thank you all for their greetings", he said.
Karunanidhi turned 91 on June three and a host of events were held across Tamil Nadu on that day.