Idea to steal: managing unsubscribes

I accidentally unsubscribed from Argos’s email list earlier this week. Luckily though, the retailer was on the case to rectify that error. With the subject line “Are you sure?”, Argos’s email immediately caught my attention in a crowded inbox. It continued: “We are sorry to see you have recently chosen not to hear from us. Argos emails are a great way to be the first to know about our best deals, exclusive competitions and much, much more. If you have changed your mind or didn’t mean to unsubscribe, please let us know by clicking here.” This simple, no-fuss email ensured that I quickly added myself back to the list.
Do you know how many of your email recipients have inadvertently unsubscribed? An email like this is a neat way to win them back. What have you got to lose?--MT