[cseleborg]

So once everybody has automated this, the next level will be the handwritten note with a personal detail, which will increase (repeat) sales.

Back in the day, I used to write a handwritten note with every single box I sent out. Since I had often had a conversation with the customer prior to that, I could often include some personal detail, showing that the message was not generic but truly written for that person. (I did have a generic message that I would use in a minority of cases.)

It does take a little bit of dedication and love of the customer to do this over and over again, so I'm not convinced shady, unscrupulous marketers would do it.

Caveat: My business eventually failed, so...