Spurious emails: "new sign-in to your account"

(This feedback is about the quack.recf.cloud site itself rather than C2 – if this isn't the appropriate place for that, please feel free to delete this item)

Every time I visit quack.recf.cloud, I get an email from no-reply@recf.cloud with the subject line "New sign-in to your account". This happens even if I did not have to complete the sign-in process when visiting the site, i.e. I was already signed in from a previous visit.

I think most people would agree that visiting a site you're already signed in to does not constitute a "new sign-in" to that site, and I can't recall any other website I've used that behaves this way. Moreover, those "new sign-in" alert emails serve an important security purpose – if someone other than you really has signed in to your account, that's important and potentially urgent information that you should be alerted to – so sending the same email every time you merely visit the site will have a boy-who-cried-wolf effect over time.