Hi.
I am developer of duplicati-monitoring.com, a monitoring service that processes Duplicati backup reports and sends summarized email reports and provides a dashboard.
What we are doing is using the http reporting (send-http-url option) to send the data to our service, which basically is a script parsing the data and storing it into a database.
Maybe this could be a way to achieve what you want to do?
Another way is what dupReport does: They grab the emails sent by duplicati from the mail server, parse them and generate new emails from it.