gowflow, this is a tweak to the solution:
How this needs to be adjusted is that some of our customers have two Liberty Reserve accounts, so I need to have two values (or more) in Col E (their LR account number) so that if either are found the email data is imported.
As you may remember the part of the email needing importing is the below where the 'From Account' value is the value that is searched on in the Mastercard workbook.
Date: 1/3/2013 9:36 AM
From Account: U7787878 (Generet)
Memo: reference card number 31234567890 Deternerina
Any questions, please ask.