Macy's emailed me to let me know that they got my payment. Wasn't that nice of them? No worrying that the check didn't arrive, no waiting until it clears the bank. Just a little thank you for paying the bill.
I think I'll pay this kindness forward. If Verizon ever send me the $37 refund they owe me from last June, the one I've talked to at least 16 customer service representatives about and spent more than two and half hours on three phone calls discussing, then I think I'll send them an email saying thank you as well. A little thank you for a job well done.