I cannot answer your questions about UPS, but I can tell you from other forums that only obvious junk mail will be stopped. Any thing in an envelope with your name on it will be forwarded and it will cost you. This is the reason we asked our oldest daughter if we could use her address for our permanent address. She goes through all our mail and we talk about it over the phone. She is on all our accounts so she can write checks for us and forward any mail that we need to look at. And best of all, it costs us very little. I buy her 100 stamps at a time which she uses to send us stuff and we have automatic debit for all out credit cards, phone bill, etc. For us it works out very well, all in all it about a $150 a month. Way less than any mail forwarding services we looked into. Best of all, ALL the junk mail is round filed.
Berniece & Russell with LilBit a Netherland Dwarf rabbit
1987 Southwind, 1995 Ford F150 Supercab 4X4 toad
Life in the fast lane? No thanks! We will stop and smell the flowers at every chance.