Ok weird

so i just got this random email which looked like this:

"Hi mr. awesome,

4rent has sent you a Billet Doux from
BilletsDoux.com

To pickup your Billet Doux, just click on the URL below, or copy
and paste it into your browser’s address bar:"

so i clicked the link and i got this:

the reply email was: 4rent@yohouse.com

so i went to yohouse.com and its password protected.

WTF?