With those, I find that you can avoid a lot of issues by adding the correct amount of stamps to make it to the non-machineable rate. The items usually scan better and you can then use a 4"X7" kraft bubble envelope to ship your items much like you can do through LetterTrack Pro. I also recommend usng a slightly thicker envelope that is less likely to get caught in the machines. I get a selection of brown A2, A4, A6, A7, A8 and No. 10 brown kraft envelopes and I always use a clear glue stick to make sure the envelopes stay smoothly sealed so they are less likely to get caught in the sorting machines.
Next, I contact my customers after two days if an envelope did not scan locally and let them know that I did indeed ship it and that if anything were to happen and the item not be delivered that they are covered by the eBay moneyback guarantee. I also let them know that the item will most likely show up in the system when it reaches the USPS Regional Sorting Station nearest to their location. Simply communicating with the customers will almost always prevent bad feedback being left.
Lastly, if a customer attempts to leave you negative feedback because an item is not delivered, eBay will take the feedback down as long as your item scanned somewhere in the system. When you get their claim you just need to explain to them that eBay policy is for a 5 business day waiting period and if the item has not registered as received at their address by then, you will notify eBay and they will give them their money back. This will not impact you in this case. If you automatically give them their moneyback and close out the case, you are out your money. If the item shows that it was delivered and they claim it was not, you again are covered because they can't provide negative feedback in this case, and 9 times out of 10 eBay will not refund them their money either because many times the customers doing this are frequent fliers regarding delivery claims. Sometimes if it is a persons first claim, they can appeal it through eBay and eBay will give them their money back still and not impact you as the seller like they do in other claims where there is proof that you did ship the item.
