If you wish to get a report of your postage purchase, there are 2 ways to do that: either via your Express1 / Endicia account, or via your Appath account.
For more info on how to get a report via Appath, please click here. As a side note, please keep in mind that due to some limitations, we will no be able to display the full list of transactions, but we will show you the last 25 to 50 transactions instead.
For a full history, you will need to sign in to either of your accounts or simply contact them for further assistance. Please check this forum post for all Shipping Carriers contact info.