Find the forms for mail in rebate offers. If you send your original receipt or barcode, always keep a copy for yourself. Normally you must mail in the rebate form and all supporting documentation to validate your claim.
The mail-in rebate (MIR) is the most common. A MIR entitles the buyer to mail in a coupon, receipt, and barcode in order to receive a check for a particular item from local or online store.