Disclosed are systems and methods for using a transaction to collect additional transaction information. The method may include: receiving transaction information indicating that a transaction of one or more products and/or services has been made by a user from a merchant; when the transaction information is received, scanning a user e-mail account to identify a receipt for the transaction within an e-mail of the user e-mail account, wherein the receipt is indicative of a transaction price; when the receipt for the transaction is identified: extracting information of the one or more products and/or services from the receipt; and based on the extracted information, automatically generating and submitting a price adjustment claim for the one or more products and/or services when a price lower than the transaction price is found; and when the receipt for the transaction cannot be identified: automatically submitting information about a missing receipt to a fraud system.