Right now the only way to access matomo is with the super user creds. In order to have other team members login we need to setup SMTP so we can send the emails that will allow users to make accounts.

This was done on the last Matomo service:
Based on your requirements, our existing SMTP relay service smtp.corp.redhat.com should work.
This is self-service and no username or password needed - use port 25 and send as @redhat.com.