I'm using AEM 6.3 and after reading this I found out that
On AEM 6.2 or above, this service uses a Service User for repository access. This user is configured with the expected permissions required, but additional permissions may be required if your repository design deviates from the expected structure.
User name: acs-commons-email-service
ACLs:
- jcr:read on /etc/notification/email
What I want to do is use my user instead of this user. How can I achieve this?