Not receiving enquiry emails

[Kealahi V]

A prospective renter wrote me and said he had submitted an enquiry through the site.  Never got it.  Double checked the email account it was supposed to go to, a gmail account, went to the server and looked in my spam folder.  Nothing.  Did a test of my own, never got that one either.  Anyone else having issues?  Ideas how to fix?

Thanks,

Kealahi