I suggest having a feature where we can control the notification system email from the Apps and set a domain or a notification SMTP through our servers rather than using appuser.io as a part of the branding removal plan as if you searched on Google you can find this and many users had issues that this email sometimes goes to spam or they don’t know who is this
So we can have the configuration either Account wise or App wise and since its better, if its account wise so it can affect all of our apps to save time in the configuration if this possible