But the profits are here at double-digit percentages, for the crazy and brave.I have read many inspiring stories here and have always come away positively motivated. 

When I call their 800 number is goes to a voicemail with a digital recording that doesn't have their name. 

I will need to balance my own desire for the technology with that practical side of the law of unintended consequences and putting a tenant through a significant impact to their living space and hiccups that could arise in what seems to still be a steep learning/adoption curve for the energy providers/contractors/local municipalities/and me :)Are there examples of people here in Denver that have made the switch to a heat pump for heating and cooling and if so how have they heated on the colder days such like the recent low single digit to -20 F span we've been through? 

A lot of great options out there for self-managing if you decide to go that route; aside from providing the basics (listing, tenant screening, digital lease creation, rent collection, and maintenance tracking) some services also offer your tenants additional capabilities which makes it an easier sell on your end when getting them to transition over (ie. their ability to report on-time rent payments to the credit bureaus).

Digital agreement, signed electronically and a copy is emailed to them.

For the 7 digit spread, that depends.

You are witnessing the miracle of Bay Area rents over the past 7 years -- they have risen by double digits in many of those years, and remembering the law of 70 (70/i rate = years to double @ compound interest) it does not take that long for rents to double. 

This is what we do:http://www.menards.com/main/home-decor/home-access...No digital stuff or extra bells and whistles so less things to break.

I have Digital Watch Dog camera system which I love.

Using targeted digital ad campaigns, on Facebook or Instagram for example, is a great way to build your email list.