How do I recover what email account I used to set a make-me-move price?

I set a make-me-move price on my house in July, but I cannot recall what email account I used to register (assuming that I did register in order to do it). When I entered my two email addresses into the 'forgot my password' box, just now, Zillow replied that neither was in the system. So I registered with one of them and tried to claim the house, but Zillow regards it as already claimed and won't let me make any changes without the permission of the owner (that's me, but Zillow does not recognize me as such). I cannot figure out how to identify what email account is attached to ownership of my house. I tried contacting the owner, but the message I sent did not show up at either of my accounts.