Hello and welcome @proot 
Have you ticked the box on your Preferences/Notifications page?
[YourSite]/my/preferences/notifications
(and it might be worth checking your Preferences/Emails settings too 
)
Edit:
Having said that, I now can’t remember if I’ve ever received an email for a Follow notification. 
I shall go and test.
Update: It does not look like that is a notification that triggers an email.
Hopefully someone will correct me if I’m mistaken…