Script for improved data analyses SuperOffice/Mailgun

Dear team 

an Onsite Customer (Version 9.2) dscovered, that the number of sent and received emails varies greatly between SuperOffice and Mailgun which is caused due to the fact, that once Mailgun accepted the mails, it is marked as sent in SuperOffice whereas the status if it´s actually sent and received by customers is only visible in Mailgun and not transferred back into SuperOffice.

My question:

Has anyone ever discovered the same issue AND already immplemented a script which solved the problem? 

Thanks for any advise! 

Simon