.- Ask for referrals in a PS in your emails and also in your voice mail greeting, so it's automated.

Suffice to say, I could save about $100 a month or more per property by having this automated.

I can assure you that deals do not come from an automated MLS listing email unless you are looking for retail prices. 

I am an investor and a CPA with clients investors.I use Quickbooks to manage my investments and it works - so far :) it also has invoicing and payment automation, however, you need to add the extra expenses (a repair) and this will happen with any software. 

However, I may want to implement some automation with regards to my current property manager.

. - Annual increases have not ever been automated with our office.

You can go to a site like Zillow and set up automated keyword searches for terms indicative of distress.

It is very common for lenders to do automated appraisals, desktop appraisals, and drive-by appraisals. 

There are many tools out there that can automate many of the management intensive areas of vacation rentals such as pricing, guest management, and cleaning. 

I'm also a little concerned about their automated valuation models and using publicly available information....I think I need an on-site appraiser to really capture the most accurate, current market value of our home.