I won't be. I have recently completed a review of all of the bills that I pay monthly and have transferred as many as I can to "online" payment.
One of these is my phone bill. I even notified the phone company that they needn't send me a bill (eliminating another piece of monthly mail). They will e-mail me to notify me that the bill is ready, I review it on-line and pay it through automatic withdrawal from my checking account.
The days of the USPS are numbered.