One of the things that has always irked me with regards to Gmail was that it was never painfully obvious when you could actually send an email with all your attachments, or how long it was going to take to attach those files. You either sat and waited for the name to appear, or stared at the sending notification. Neither very productive. Thankfully, Google has added progress bars to the attachments area of Gmail. So now you can select multiple files, or one giant one if you wish, and know exactly what the progress of the attachment upload is. Gmail keeps getting better and better!