I used to get hand written letters in my mail box. They talked god and Jesus and such. No mention of the WTS or jehovah witnesses. I use to think it was quite sincere that someone would take the time to do that.
Years later, married to a JW and I see my wife doing the same thing. I now realize it is about wasting time. You count the time writing the letters instead of using a photocopier . What an absolute joke.