The notification channel sends out emails to agents only. (and to users in general upon password reset…) You can learn more on what it does here:
https://admin-docs.zammad.org/en/latest/manage/trigger/system-notifications.html
If you want to receive also, then you’ll have to add an regular account.
With the given description I am unable to understand what you’re trying to e.g. send out a mail. I’m missing scope here, sorry.