My policy is to deliver the best product and chose to hand (human) insert the letter and tuck over automation to insert and seal because it presents a truer feel.  

Like Sixpack Abs and Get Rich Making Money in Your Underwear, people who are attracted to real estate as potential investors are not encouraged to see the ugly seedy side of the business.I'm referring to dealing with the the garage sale of humanity, the crazy people, evicting raging tenants, death and destruction, lender bureaucracy, state compliance, etc.

Made me lose faith in humanity, yet given me hope at the same time. 

The amazing thing about human potential is that you can do anything that you take massive action on. 

we offer human handwritten mail.  

She's half dog half human.

I can manage hundreds or more from a macro position, but when any human begins to micro manage others, about 30 can be tuff to do, depends on the details required.

When helping my old boyfriend fix up his first rentals years ago, we found a human skull in the attic.

Sounds a bit robotic to categorize human beings in this fashion but I'd think in a business built on networking it is never a bad thing to be over-organized to aide memory.

@Jay Hinrichs  yes, Voxer is the best way to communicate ever invented all human history. :-)