---
kind: "unit"
title: "19"
title_heading: "Customs Duties"
key: "chI/part145"
level: "part"
label: "Part 145"
heading: "Mail Importations"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/19/chI-part145"
sections_count: 43
---

# Part 145 — Mail Importations

Title 19 C.F.R. — Customs Duties › Chapter I — U.s. Customs and Border Protection, Department of Homeland Security; Department of the Treasury

## Sections

- [§145.0. Scope.](/cfr/19/145.0.md)

## Contents

- [Subpart A — General Provisions](/cfr/19/chI-part145-subpartA.md)
- [Subpart B — Requirements and Procedures](/cfr/19/chI-part145-subpartB.md)
- [Subpart C — Administrative Review of Mail Entries](/cfr/19/chI-part145-subpartC.md)
- [Subpart D — Special Classes of Merchandise](/cfr/19/chI-part145-subpartD.md)
- [Subpart E — Restricted and Prohibited Merchandise](/cfr/19/chI-part145-subpartE.md)
- [Subpart F — Exportation by Mail](/cfr/19/chI-part145-subpartF.md)
- [Subpart G — Mandatory Advance Electronic Data for Mail Shipments](/cfr/19/chI-part145-subpartG.md)