If you’ve wanted to filter by attachment size, or find unlabeled emails… you’re now in luck. Gmail has added some search operators recently.
My favorite is the ability to filter by attachment size:
size:2msearches for attachments of 2MB
larger:3msearches for attachments of 3MB and larger
smaller:5msearches for attachments smaller than 5MB
You can combine these searches with the other Gmail search operators:
Need to find unlabeled messages?
has:nouserlabels will show you stuff you haven’t labeled.