sometimes it's the little things
By: Johnathon Wright on: October 20, 2009
I was looking through the ways you can tweak gMail and found this. I can't say how often it would have prevented me from looking like an idiot.
"Forgotten Attachment Detector":http://gmailblog.blogspot.com/2008/09/new-in-labs-handy-intern-tweaks.html - Prevents you from accidentally sending messages without the relevant attachments. Prompts you if you mention attaching a file, but forgot to do so.