So far, they have shown to have the absolutely worse customer service response time.

I'm now considering expanding my real estate ventures into building custom homes, but I know this is an entirely different beast between the required capital, learning curve, time committment, etc. 

I heard podcasts where people uses customized versions of Podio or SalesForce? 

Rentvine's excellent customer service spoils me, and I can't imagine using software with lousy customer service. 

Using Power Query and the Propery ID, create a custom URL for each address4.

Verified reviewers, reviews in the last year (or other time period), verified customers, reviewers with more than x reviews, reviews with more than just stars (written comments)?  

You can change it to your custom name if you would like otherwise, it would just show the phone number in Caller ID.We use a 3rd party for eSign and eSign don't have custom branding currently.Sharad 

The cancel function is not working and I was forced to pay over 400 for service I did not want.There is no customer service number to call.

I've looked into 6+ including calling and experiencing the customer service myself and have not found one that seems reliable.

This is not only my experience, but when you call VRBO or Airbnb customer service, they will tell you the same thing.