I know my recent posts are a bit Google based and fortunately or unfortunately this is also based on a product of Google, Gmail

By the help of TwitterGadget, one can tweet from Gmail. If you are Gmail addict or kinda loyal Gmail user like me, then I hope this would be helpful to you. In order to add twitter service in Gmail just follow these steps:

• Go to Settings section
• Under Settings go to Labs tab
  
• Enable Add any gadget by URL and save the settings
  
• Now if you again browse under Settings tab, you will see new tab called Gadgets
• Just enter the URL: http://www.twittergadget.com/gadget_gmail.xml in the input box found under Gadgets tab and you are done

If all works fine, you will see twitter gadget in the left side of Gmail below Label section.

References:

• TwitterGadget
• How to Add Gadgets to your Gmail Account

Happy tweeting from Gmail