Be careful with these transactions and get advise from a knowledgeable real estate attorney who works with these to make sure all steps are taken to property protect yourself. 

The way I know is; I send the company a list of my customers and when I get the list back the email addresses and phone numbers are accurate.SInce, it sounds like you have not used this type of service before, I will tell you what to expect for and and every other service provider.If you send any company a list of property owners that you own and you want the company to give you the phone numbers and email addresses this is what you can expect .Send the company 3,000 property addresses - you will receive about 1,000 phone number and 850 email addresses.

You should be able to customize this with your manager and adjust over time. 

The lender is going to provide some necessary guard rails to protect you from what you do not know. 

You can set up templates to save time and customize them to match your brand.

Is it liability protection?

The more protections the city layers in, the more this compounds. 

This also protects the value of their investment. 

Zoning Ordinances are often not ‘black and white’ and municipalities will protect themselves or be persuaded by the public when making decisions. 

When they book through Airbnb, you have some protection/insurance through Airbnb to protect you if things go wrong (although I know many people have had issues when that actually happens).