Never use wiring instructions sent electronically or from a phone number you are not familiar with and can't verify. 

We used to use them for direct mail, email, and social media ad campaigns. 

Most serious and qualified tenants are searching on the major 3rd party platforms you mentioned + realtor.com, redfin, and a few others.Apartments.com & homes.com are owned by the same company and may offer some additional marketing options.Another strategy to consider here is social media - video marketing.

You don't have to spend money  out of the pocket on searching Redfin, making some phone calls, making offers and posting ads on Craiglist or whatever local media you want to use to sell the property.

I do occasionally post about it on some of the social media sites for travel nurses, such as Travel Nurse Gypsy Housing for example. 

This guy will buy $2,00 rims for the car, then be late on the rent, Go an a golf trip to Singapore, then he is late with the rent.Maybe we should both look at electronic rent collection that allows for a visa payment?

It is NOT like what social media or influencers try to paint, it's hard work. 

I believe the sponsor still is on social media going about their day to day

It can be easier than cold outreach, especially if you offer them guaranteed rent and hassle-free management.Also, marketing can really help you stand out—whether it’s through listing on multiple platforms, building a solid website, or using social media for direct bookings.

It takes actual thought and a programmer's mind to be able to build a CRM into something that's actually effective (sure a basic person could setup a phased text message or email automation, but it's tying everything together with opportunities, automated campaign re-entry/follow-up, social media integrations/automations, etc that is the real value).