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I have to ask WHY?
Why would you send me mail to advise me to turn on auto-renew?
Seems like a waste of money to me when I have always kept it off and know exactly when I need to buy the next renew on my terms not when you want me too.
Also, I learned a long time ago auto-renew charges me the top dollar unless I go out and find a reasonable price I would like to pay.