1. A method of notifying an exception client associated with a payor financial institution of an exception item, said method comprising: receiving a presentment check file, said presentment check file including presentment information related to checks presented to said payor financial institution for payment; receiving a payor check file from said exception client, said payor check file including check information relating to checks written by said exception client; comparing said presentment check file with said payor check file thereby producing at least one exception item; and sending said exception client an e-mail notifying said exception client of said at least one exception item.