For users of Gmail,
Alan Henry at LifeHacker has a valuable tip and detailed discussion
about a smart label search for receipts in your Gmail.
See
Find Receipts in Gmail with This Hidden Smart Label.
The trick is to enter
label:^smartlabel_receipt
in the Google search box at the top of Gmail.
It will not work if you just plug it into normal Google search.
Hat tip to CaryGEE.
