Delivery Status Notification (Delay)

My super administrator email is set to my email, it is NOT admin@example.com. And we set some Email Alert, and the Email Alert works fine. But every time the system send out emails, it seems that it also send one email to admin@example.com. That’s why we always get a new email from Google in our ERPNext Email Inbox. Please take a look at the screenshot.

Thank you for reading!

@Shan_Ruan
Is the issue occurring for a emails for a particular doctype or its sent on all email. I would suggest you to check both email accounts and email alerts, there can be a possibility of this email set as an receiver in the email alert option.