I like the deal Christine has but we are a 24 hour facility and if I have a customer come in and pay and I send a thank you letter and it comes back and I overlock their unit and let's just say they got a job offer in another state and decided to move that night and let's just say we took off to the grocery store. I just opened myself up to a lawsuit, and with today's age of the let's sue everybody -not a good idea. Your laws may be diffrent and boy that is a really good way to catch your wrong address but think about it is it worth it. Every time I get return mail I always note it in the computer and as soon as I see the customer (which we know all 500 plus and have learned their family members maybe not by name but by face) I try to get it corrected ASAP.