It seems that the Gmail team has a piston in one place: new features go one after another. I just passed the news about adding attachments with DragNDrop, and here's another feature - now sending someone a message like “If we don’t want to drink ... kvass,” you can immediately add an invitation - a new event will be automatically created in the calendar.
Gmail was more convenient (at least for me) to all desktop clients, and it keeps getting better and better!