Enable notifications on CloudSQL scheduled/sudden maintenance

I want to enable slack and email notifications for GCP CloudSQL instances's maintenance.

When i go to each one of CloudSQL instances, I can see notifications are off in maintenance settings.

However when i try to edit maintenance and notification preferences, I am not able to find a way to turn on notifications for maintenance.

Also the docs are a bit misleading IMO. On this Page https://cloud.google.com/sql/docs/mysql/maintenance#notifications

There is a link for You need to opt in to maintenance notifications. but it goes to a page where I couldn't find anything related to turning notifications on https://cloud.google.com/sql/docs/mysql/set-maintenance-window#opt-in

My Questions :

• Can I enable all kind of cloudsql maintenance notifications including planned and sudden migrations.
• Is this possible to receive these notifications on slack and email.

Thank you in advance.

Only email is supported. You can do that by going to that url: https://console.cloud.google.com/user-preferences/cloud-profile

Then click on communication

From here you can activate the email communication by clicking on the slider.

You can select one or several projects in the dropdown list if you want.

EDIT 1

Sadly, you can't put a team email for notifications