I'd email myself about ten years ago to buy ALL the Apple stock I could.
Random aside, but I took an economics class back in 1996, where our project was to invest $10,000 in fake money in a company. I put the bulk of my money in Apple. I saw a modest short-term result, and the instructor was giving me grief about how Apple was a "dead" company. I told him repeatedly that if I actually had the money, I'd immediately sink it into Apple. I didn't predict what happened -- who did? -- but I liked the brand.
In terms of email, I don't know. Probably something about avoiding NJ, but as Redz said, even the poor experiences sometimes open up positive doors.