Log on to Indiatimes and click on "Options" in the middle of the your mail window.

Select "Add Signatures"

a new  screen will open
 

click add signature button new scree will open

Type in the text of your signature into the text box. 
 

then select the radio button "Above included messages / Below included messages"

click on save button

Create a new indiatimes email message to check your signature. Your signature should appear automatically every time you open a new message.