Yes, Slice can automatically find e-receipts in folders for most email providers. If you have a Yahoo, AOL or iCloud email account, there should be no problem. If you are a Gmail user, make sure "Show in IMAP" is enabled on labels/folders you'd like Slice to search. You can find this option in your Gmail settings under labels. If you are a Comcast or Cox user, Slice won't be able to find e-receipts in folders. However, you can move your e-receipts to your main inbox and Slice will pick them up.