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Before you contact Stamps.com
Stamps.com — Online postage and business shipping tools. Identify whether you are the sender or recipient when asking about a delivery problem.
- Identify whether you are the sender or recipient when asking about a delivery problem.
- Save the delivery or collection receipt for the carrier’s private support channel.
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Sources & updates
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Page text updated Oct 9, 2026. Individual contact source dates are shown above.
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