Unsubscribe from page?

Hi, this seems like a great plugin, but I’m not clear on how one unsubscribes.

It seems like to unsubscribe from you page you need to be logged in so the site knows who you are / what pages you’ve subscribed to? In that case every person subscribing to the page need a user account.

I hope I’m missing something because it seems like a great idea. Please LMK, thanks!