Add Identifier to new USPS (Stamps.com) Postage Purchase emails from Shipworks

Hello, 

We have 6 or 7 Shipworks licenses under our account. We use stamps.com for any USPS needs. We have a stamps.com account for each license to keep billing seperate and in the past, when we would purchase postage via Shipworks for stamps.com we would receive an email from stamps.com for this purchase and it would always list our account username as part of the invoice. This let us know which internal account to link this expense to. 

Now that Shipworks is sending the emails for these purchases, there is no mention of any account. Can these emails be updated with the same account name that we have to chose under Shipping Profile / Account: (the account names listed under Shipping Settings > USPS > USPS Accounts) so that we can get some sort of reference ID as  to what USPS account the purchase was made for for those of us that use multiple accounts?

Or if there is a way to see this info currently please advise. 

Thank you