Also x2 to what @Antoine Martel  said in terms of FHA most likely being your best bet if you want to house hack.

I need some advice on online rent payment collection services.

I purchased BiggerPockets Pro so that I could do the analysis of properties I have found online and with the help of a real estate broker, and I even made my first unsuccessful offer to puchase a property.

Once I feel I have an appropriate rent price, I require all of my prospective tenants to complete an application through an online credit check & tenant application website.  

I look at Bitcoin as betting at the black jack table & real estate is a real investment that i feel i can make calculated risks with. 

If they have an online archive you may be able to search the address there.

They have a positive online reputation.

Craigslist will be your best bet likely. 

And I would bet very few would get marketed to.The key is to find the ones where the numbers make sense (i.e. price to rent ratios) and that are good areas with decent schools.

I understand some sellers are pushing the market bet better for the buyer is a motivated seller willing to deal.