Three years in the making

I just found a note to self reminding me to email my grandmother. It took me a solid five minutes to realize she's been dead for three years. This is the pace at which I work people. I keep my promises, oh yes, even if it takes three years and you've died in the interim...but so help me god, I keep my promises. So the question is now, does an email account expire along with it's owner?...or does it simply remain idle for eternity? Essentially I could still email her, for the sake of my own conscience, right?