If you are pushing the limits of your allotted Gmail disc space, here is a handy widget that can make finding those huge emails easy. Find Big Email is a simple web based widget for Gmail to help you get rid of those 3 year old emails with EPS attachments that are collecting digital dust.
Basically, you just submit your Gmail address to the site and Find Big Email does a one time scan of your Gmail account email account. From a security POV, it doesn’t ask you for your password. I don’t know the technical way it is able to scan your Gmail account, but I have not had any issues. More details on security questions related to the service can be found here and here.
Anyway, the one time scan then creates a set of labels based on the different file sizes of your emails and it creates some custom labels (Biggest, > 2MB, > 500kb, > 100kb) using Gmail’s advanced label/search functions that then populate your label list. Go to those labels and all the emails that meet those size criteria are listed right there for you to see. From there, delete away and clear out your digital email attic. The nice thing is that if you ever start to encroach on your disc space limitation sometime in the future, just click on one of these labels (“Biggest” emails or emails over 2MB) and all of those emails will be there to pick off and delete.