Deeper integration into Gmail would make this close to perfect for me, I spend alot of time within Gmail, Remember the Milk had a widget interface that showed a quick view of tasks and projects on the left bar below your message categories.
Also a quick todoist drop box below each gmail message you are reading in which you can easily add that to a project without having to forward it.
Today, we've release our brand new Gmail plugin allowing you to add emails as tasks directly from Gmail: https://todoist.com/blog/2013/11/new-todoist-plugin-for-gmail-to-help-conquer-your-inbox/
Please try it out and see how awesome it is :)
The Gmail plugin is great!
I would like to ask for a feature request though. When you are in the inbox, it would be great to have the Add Task button available on the list view instead of having to open the email first and then click the task. Or could you add it to the right click menu?