Enable Transliteration to type Indian languages in Gmail
Google India team introduce Transliteration, that support typing in Indian languages in Gmail – Hindi, Tamil, 
Telugu, Kannada, and Malayalam. This feature which available by default for Indian user, will automatically convert the English word to their Indian language equivalent as you typing words in the way they sound in English.
If this feature does not visible for you, please enable this feature from language setting page by clicking on the ‘Enable Transliteration’. Please note that this is not the display language, as you can still have this feature while your Gmail shown in your desired language.
i could not find transliteration option in my settings page-in general . how can i enabel transliteration
@Umamaheswararao – Please activate it first from the Gmail Lab menu
Please activate it first from the Gmail Lab menu means what? where it is located?
there is no such option. i wanna compose mail in tamil… how it is possible?
@Kumar – Apparently it’s no longer there
May i know , when google re-introduce that option to their gmail account?
Is ter possible to contact google person’s?
@Kumar, sorry, I have no idea about that, the article was posted by Anuj Sharma, Google Software engineer, you can refer to the post URL below
http://gmailblog.blogspot.com/2009/03/typing-in-indian-languages.html