I receive lots of emails from scmadmin@wiki.labcollab.net and I don't know how to stop it.

[anacioca]

On email settings it appears that I didn't check to receive any notification, I don't follow any site but I am receiving from alexa mobile app one mail per two minutes. I pressed stop watching space button, manage notifications, but nothing seems to work. It is a bit frustrating. Can anyone help me please?