NOT Google.

One example is Aloha Capital (you can google them - they were a print advertiser in the inaugural issue of Bigger Pockets Wealth).

manually SMS or google bulk SMS systems or in time step up to a full on marketing platform. 

And make sure you understand the liability associated with allowing the tenant to make repairs: https://vimeo.com/295658671(Since you are in Florida, I highly recommend Evict TV (google it) - there are literally hundreds of free videos like the one above by an attorney on Florida-specific landlord-tenant topics!)

Mother of all scammers was Remington financial  see American greed episode  and google Ingrid Robinson she took them down..

The landlord contact could be fake also but that is where you can do some due diligence using google if you are overly concerned.

If they accept then you send a PSA which you can have your attorney draft up.I don't share my templates publicly, but if you hit the Google machine you will find a few templates for sure.

There are also so great military specific sites and podcasts to listen to, just google military real estate investing.

I found contractors by either asking the real estate agent or doing a Google search and contacting the best reviewed - found a real winner this way.

Search Google and you'll find a ton of free examples.The estoppel is a form used to collect basic information about the landlord and tenant agreement, signed by all parties so there's no confusion over what you are purchasing.