Who really delivers Snail Mail?

My 6-year old daughter has been taking Imagine Tomorrow Computer Classes since she was 2.5-years old. The other day I took her with me to set up for a camp and I was talking to my teachers and said here is the snail mail for the week. She looked at me and said in a voice as if she caught me "Ah Ha! Snail does not deliver the snail mail!" I laughed and explained that Snail delivered the mail to our house. I love the mysterious nature the characters of Imagine Tomorrow take on. The kids are truly immersed in the story line always anxious to hear what the puterbugs are up to, excited to see Mr. Scott on their email, and curious about the authenticity of the Snail, Dakota, and Webs.