Just type in English and gmail will automatically translate it into your preferred language. Since malayalam is my mothertongue, I use malayalam in my emails. I just have to type in english ie Manglish and I get a neat malayalam output from gmail.
How to switch between english and your language
When I started using malayalam, I had a doubt, how to revert back to english while composing a mail?
I got the answer soon enough
Using Ctrl+G helps you toggle between English and your language, in my case Malayalam.
This tool has improved my productivity and my emails are more personalized now.Hope this tip helps you a lot too.This tip also works in Orkut, iGoogle,Blogger.