Version 4.0+ fixes Google Drive document buttons which allow the creation and manipulation of new Documents inside a Thunderbird tab!Want to use G-Hub lite in a commercial environment or require Google Apps support? Try G-Hub Pro! Available at:
G-Hub Lite turns Thunderbird into a messaging center by integrating all of your Google services into Thunderbird by opening them in Tabs!
Adds Google Voice, Google Gmail, Google Calendar, Google News, Google Drive (Docs), Google Groups, Google Books, Google Play, Google Maps, Google Sites, Google Finance, Picasa, Google + (plus), and Google Search tabs to Mozilla Thunderbird.To Activate the buttons and tabs
1) Right click the Thunderbird toolbar and select "Customize..."
2) Scroll down in the dialog that opens and locate the button that says "Google (Service Name)"
3) Drag the button to the location on the toolbar you would like it at
4) Close the Customize dialog box
Click the button you just added to launch the affiliated Google service in a tab inside Thunderbird.