# 19 CFR § 145.5: Undeliverable packages

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-19-145.5

## Section

- **Citation:** 19 CFR § 145.5
- **Heading:** Undeliverable packages
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 19—Customs Duties > CHAPTER I—U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY › DEPARTMENT OF THE TREASURY > PART 145—MAIL IMPORTATIONS > Subpart A—General Provisions

## Text

Mail articles which are refused or undeliverable, except mail articles for which a mail fine entry has been issued in accordance with § 145.4(c), will be marked by the postmaster to show why delivery was not made, and will be forwarded to the proper exchange post office for return to the country of origin. Mail entries will be removed from the mail articles and returned to Customs for cancellation. If, for any reason, an undeliverable mail article known or supposed to be dutiable is not returned to the country of origin or forwarded to another country in accordance with the Postal regulations, it will be delivered to Customs for disposition under the Customs laws and regulations governing seized or unclaimed merchandise.

## Nearby sections

- [19 CFR § 145.1 § 145.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.1.md)
- [19 CFR § 145.2 § 145.2 Mail subject to Customs examination.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.2.md)
- [19 CFR § 145.3 § 145.3 Opening of letter class mail; reading of correspondence prohibited.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.3.md)
- [19 CFR § 145.4 § 145.4 Dutiable merchandise without declaration or invoice, prohibited merchandise, and merchandise imported contrary to law.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.4.md)
- [19 CFR § 145.5 § 145.5 Undeliverable packages.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.5.md)
- [19 CFR § 145.11 § 145.11 Declarations of value and invoices.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.11.md)
- [19 CFR § 145.12 § 145.12 Entry of merchandise.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.12.md)
- [19 CFR § 145.13 § 145.13 Internal revenue tax on mail entries.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.13.md)
- [19 CFR § 145.14 § 145.14 Marking requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.14.md)
- [19 CFR § 145.15 § 145.15 Bonding requirements for informal mail entries.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.15.md)
- [19 CFR § 145.21 § 145.21 Administrative review.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.21.md)
- [19 CFR § 145.22 § 145.22 Procedures for obtaining administrative review.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.22.md)
- [19 CFR § 145.23 § 145.23 Time limits.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.23.md)
- [19 CFR § 145.24 § 145.24 Amendment of entry.](https://www.frixlaw.com/law-library/statutes/ecfr-19-145.24.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-19-145.5. Check the current official text before relying on it. Not legal advice.