That is a very saturated list to be mailing to so you want to make sure you have a good amount of leads.  

Over time markets get saturated and response rates drop if you're doing the same thing as everyone else.

Especially if you buying in newer neighborhoods and saturating them with renters.. that will kill values all on its on.. the only value with be an investor backing into a cash flow number..

Not sure if they are saturated with rentals or not.You could go on HA/VRBO and see how full vacation properties calendars are and what rates they are getting.

Social Media Marketing (SMM) is a great tool to generate leads and network.It's becoming extremely saturated though so you must always think outside the box.Watch what others are doing in your area and then look for ways to tweak their techniques.  

Here are my general thoughts on a few popular areas...1) Cooper Young, Downtown - over saturated, a bit too pricey2) Vollintine Evergreen, Binghampton, Crosstown - Affordable, convenient location for visitors, less saturated, some streets are better than others...3) High Point Terrace, Waynoka, Chickasaw - Great location, less saturated, somewhat affordable. 4) Berclair - Super affordable, very street x street... probably too risky for our first purchase. 

Utah valley (Provo / Orem) is saturated with unsophisticated investors that drive prices way up and returns way down.

I have noticed this summer that the waterloo rental market is on the down, developers are putting in huge high rise building with high end finishes for the students at the same price, saturating the market.Personally I see more strength in Kitchener and Cambridge rentals, Waterloo is great to more turn key though and less cash flow.

Now some new construction say in Texas were they can pop out 120k new homes will go for rentals.. and I have seen some of that in Memphis.. and this is a good option to buying older used homes.. but still again if you saturate a new construction development with renters your values don't go up.. they will stay the same and go down and then only sell for cash flow hurdles and cash flow acceptance by the market.And since the mantra is cash flow values tend to be based on soup de jour cash flow numbers..

Rincon is saturated with Airbnbs.