Yay, I just received an email I sent to myself last year!
Here’s to introduce all of you to this fun site: futureme.org. In this site, you have an option to send yourself (or someone else if you wish) an email which will only be received on a date which you set.
It’s sort of like a diary or a time capsule where you tell your future self about the things which you are thinking of right now, maybe your aspirations etc so that your future self could look back to what you were like in the past.
For example, if you are still studying, maybe you might want to send your future graduated self an email to remind him of your current aspirations/ambitions and direction in life. Quite fun really. =)