Changing Sender Name in Auto-notification emails

We have a requirement to update the sender name from 'App <test@test.com>' to 'App DO NOT REPLY <test@test.com>' of the default notification emails which are being triggered by Appian. To achieve this, we updated the site name of the Branding page on the Admin portal and it seemed to be working. But we now have problem that we see this site name 'App DO NOT REPLY’ configured in the branding page on the browser title window which is odd and not user friendly. Looks like whatever we put in as Site Name in the Branding page would also be shown in browser window title of the login page and emails. Can someone please advise if there is a way to remove the site name alone from the window title of the login page? Thank you!