The best way to dropship on Amazon is to follow the policies to prevent the seller's account from being suspended/deactivated.
These days you can find many 3rd party companies offering drop-shipping services for Amazon seller accounts.
The truth is that many of these companies do not drop-ship according to Amazon's policies.
*Make sure to speak to the company and ask if they follow all of Amazon's policies.
THE MAIN POINT IS THAT:
"…it is clear to the customer that you are the seller of record."
When a buyer receives the item they ordered, they should see that it was shipped from Amazon or an Amazon seller.
ACCORDING TO AMAZON:
"Any time a customer sees packaging, invoices, or receipts identifying a seller that is not either you or Amazon it creates confusion for the customer about how their order is being fulfilled and whom they should contact with any problems or questions."
Individual sellers or third-party drop shippers typically offer items for sale, wait until they receive an order, and then source the items from retail stores such as Walmart .com. The problems come when the buyer is either confused or upset that the item received was shipped from somewhere other than Amazon.
-The buyer may call Amazon or comment in the seller feedback that the item was packed in a box from "Walmart."
Even if it is a 5-star review/feedback, Amazon algorithms will detect this and cause Amazon to send an automatic Policy Violation or, even worse, cause the seller account to be deactivated.
Many find it logical, easy, or best to offer items for sale on Amazon that they do not have actual stock of because they do not have to buy the items until they receive an order. A seller becomes prone to several issues sooner than later.
The seller might find it difficult to buy/source the ordered item because it might go out of stock, and there isn't anywhere to buy it from to fulfill the order; this can cause the seller's ODR (order defect rate) to be affected negatively which can lead to account suspension because the order was canceled by the seller or because the item was shipped out late.
A buyer can contact Amazon about the item received being packed in a box from another retailer, or the buyer can comment about it on the seller's feedback. However, even if it is positive feedback, Amazon detects keywords such as "received in a Walmart box;" this can also trigger a policy violation/notification or account suspension.
*If you intend to fulfill orders using a drop shipper.
"Have an agreement with your supplier that they will identify you (and no one else) As a seller of your products on all packing slips, invoices, external packaging, and other information included or provided in connection with the products;"
"Remove any packing slips, invoices, external packaging, or other information identifying a third-party drop shipper prior to shipping the order."
The item should be packaged in a box without any prints or labeling of another seller/retailer etc.
The package slip/invoice/receipt from which the item was sourced should not be included in the box.
The only package slip in the box should be the one of the specific ORDER IDs from Amazon.
IF YOUR SELLER ACCOUNT IS AT RISK OF DEACTIVATION OR HAS BEEN SUSPENDED, CONTACT AMAZON APPEAL LETTER TO HELP YOU APPEAL BEFORE THE CASE BECOMES MORE COMPLICATED.