I used MyScriptFont to create 10 different fonts of my handwriting using a sharpie. Then I wrote a script that would randomize each letter. We used this to create "hand addressed" envelopes that looked like I had written them with a felt tip pen. Two could go to the same address and you couldn't tell it wasn't hand written. We also did a series of letters and they were very effective. Every time we dropped one, my phone would ring from people calling me because they received my letter and wanted to talk about it.
This article isn't about marketing automation, it is about lazy marketing automation.