Return to Sender
Return to Sender (RTS) is a carrier status for a package that could not be delivered, because of a bad address, refusal, or unclaimed pickup, and is being sent back to the shipper.
Why it matters for ecommerce brands
Return-to-sender packages cost outbound postage plus often a return charge, and the customer still has no product. Track the RTS rate by cause to fix address capture, refusals, or fraud patterns.
Common questions
- What does return to sender mean on tracking?
- It means the carrier could not deliver the package and is sending it back to the shipper's return address. Contact the customer to confirm the address and decide whether to reship or refund.
Cite this entry
"Return to Sender (RTS)." Fulfillment Lexicon, last reviewed October 16, 2026. https://fulfillment.wiki/glossary/return-to-sender/