Delivery Status Notification (Failure)

Delivery to the following recipient failed permanently: yashinaoi@gmail.com
Technical details of permanent failure:
550-5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient’s email address for typos or unnecessary spaces. For more information, go to support.google.com/mail/?p=NoSuchUser 38308e7fff4ca-33237f144aesi26060881fa.33 – gsmtp