Google Labs has lots of neat features and projects that they are currently working on and developing. One feature that I think we can all use is the Forgotten Attachment Detector. When turned on it scans your emails looking for language that indicates you are trying to send an attachment. If you don’t have anything to attach, it lets you know before sending.
Watch a short on screen video about it…
As with everything in Google Labs it’s not perfect and won’t catch it every time, as it’s a work in progress. I found that once I turned the lab on I had to sign out and sign back in before it would work at all. Even if it catches it only now and then, it’s definitely worth the time and embarrassment of having to resend the attachment.