@Sasha99
we are contacted sometimes by travel agencies, taxi companies, laundry services etc... through our email and it's ok. We connected to some of them and use their services.
They get our email address from our city's tourist info center web pages where all licensed accommodations are listed and publicly available online. If you can't access such information in your area then you could contact hosts, one by one, through "contact host" link on Airbnb. But it's a time-consuming process....