Auto e-mail after a certain amount of time?

Hi.
Is there any plugin that would allow me to send an e-mail for example exactly every one year?

What I need in deatils is this:

A person buys something in my store (engine oil).
I use this info and one year later I remind him automatically that he should change the oil and give him a proposition of the new price for him.

How can I do that? Please help me:)