Delivery Status Notification (Failure)

From
Mail Delivery Subsystem <mailer-daemon@googlemail.com>
To
tt@thekey.com
Date
Fri, 10 Feb 2023 06
Folder
INBOX
📎 icon.png
** Address not found **

Your message wasn't delivered to ccartwright@thekey.com because the address couldn't be found, or is unable to receive mail.

Learn more here: https://support.google.com/mail/?p=DisabledUser

The response was:

550 5.2.1 The email account that you tried to reach is disabled. Learn more at https://support.google.com/mail/?p=DisabledUser e9-20020adfef09000000b002c548b007f6sor971832wro.64 - gsmtp