I sell primarily books and ship them Media Mail, unless they are expedited. I was advised by my local Post Office that even the brief message at the bottom of the Amazon packing slip:
+Thanks for buying on Amazon Marketplace. To provide feedback for the seller please visit xxxxxxxxxxx. To contact the seller, go to Your Orders in Your Account. Click the seller’s name under the appropriate product. Then, in the “Further Information” section, click “Contact the Seller.”+
constitutes a “personal message” and changes the entire package into Parcel Post. They stated that if their staff opens the package for inspection and finds the packing slip with that message, the recipient (my customer) will receive the package “Postage Due.”
Have any other book sellers experienced this problem. Have you had packages delivered “Postage Due” to customers because of the Amazon packing slip, or because of thank-you messages on your invoices?