Buy USPS postage with Apple Pay, Google Pay, or Bitcoin super-fast!
Buy USPS postage with Apple Pay, Google Pay, or Bitcoin super-fast!

Refund & Underpayment Policy
updated September 14, 2023

Our refund policy covers cases where a refund is owed to a customer. The policy for these scenarios are described below:

When a label fails during purchase…

We will immediately provide a refund if something fails during the purchase process. Some common cases where we provide an immediate refund include:

When you purchase a label you no longer need…

For USPS labels that were purchased by mistake, you must request a refund within 14 days of purchase. In this case, we will initiate the refund process with USPS which can take up to 14 days to complete. Once the label refund is confirmed, we will provide a refund of your payment to your card or cryptocurrency wallet. At our discretion, we may charge a refund fee of 10% for large orders of unused labels.

For cryptocurrency purchases: Due to exchange rate fluctuations, refunds for unused labels will be processed at the US Dollar amount of the original purchase. E.g. for a $10 postage purchase:

When a checkout expires after payment is sent…

Checkouts expire for multiple reasons, including non-payment, underpayment, and late payment. We will provide a full refund for expired checkouts as soon as possible. Please contact us and provide reference information for the payment such as a cart ID (e.g. cart_123hjhk123) or label ID (e.g. lbl_asd324kjhh) and the cryptocurrency address where we should send the funds. Note that these are processed manually.

For cryptocurrency purchases: Refunds for expired checkouts will be processed for the cryptocurrency amount of the original purchase, once the payment is confirmed by the blockchain. E.g. for a $10 postage purchase:

When an overpayment is made…

We will provide a partial refund for the overpaid amount as soon as possible. Please contact us and provide reference information for the payment such as a cart ID (e.g. cart_123hjhk123) or label ID (e.g. lbl_asd324kjhh) and the cryptocurrency address where we should send the funds. Note that these are processed manually.

When an underpayment is made…

This occurs when a label is used for a different type of package (either physical dimensions or weight) than what was indicated during purchase. At our discretion, we may charge an additional 30¢ processing fee in addition to the underpaid amount for each shipment.


Please note: Stampnik is not responsible for payments sent to incorrect cryptocurrency addresses.