quote:Will the receipt for my special stamp count as proof of shipment?
That's a complicated question, as PayPal now seems to required proof of delivery for charge-back disputes and Buyer Protection. I use to consider P.O. receipts as proof, but I think PayPal is now always taking the buyer's side without a more definitive method showing delivery. Best (at minimum) method with USPS is Delivery Confirmation tracking. That's done automatically and with an electronic discount using either PayPal or USPS-direct click-n-ship. Also, PayPal requires Signature Confirmation over certain $ limit to even qualify for Buyer Protection.
IMO, I would start using the PayPal package labeling click-n-ship, and get the cheap .18 tracking at a minimum for all USPS packages. Since that pays the postage, tracking, and creates the label, you can do them all from home as a debit from PayPal. One nice feature is all your packages are already tracked by linkage from PayPal to USPS, i.e. you get links to "click" and check. I started by printing paper labels (cut and paste), and when I was comfortable with the method, switched to peal and stick labels.
I began using it last fall, and I'll never go back to stamps, P.O. machines, and USPS clerk lines. Personally, I think customers don't mind paying .18, when it verifies it's shipped, can be tracked at any time to see progress, and shows final delivery date and time (to the minute). That's because the USPS labels have a scan bar-code at the bottom that is scanned at all the sort centers and final delivery. The labels also make your operation look very professional and business-like.
At least my DSRs seem to agree with my methods:
4.9/4.9/4.9/4.8 and 205 @ 100% postive at last count
Danno