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plugin

Post OfficeMinecraft plugin for 1.21

Turn any barrel in to a Post Box with item protection when paired with WorldGuard.

server onlynewest supported release 1.21
Latest version
2.3.1
Minecraft
1.19 to 1.21
Java
Java 21+
Platform
Spigot
Licence
not stated
Downloads
2.1k
Updated
13 mo ago
Available on
SpigotMC
Space NodeOur hosting

Host Post Office servers

One click and Post Office is installed on a Paper or Purpur server built for it.

  • 1.21
  • Spigot
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Post Office declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21Spigot21+declared13 Jun 2024
1.20.6Spigot21+declared29 Apr 2024
1.20Spigot17+declared2 Jun 2023
1.19Spigot17+declared7 Jun 2022

Download

From Post Office’s own host. Nothing is re-hosted here.

For Minecraft 1.21

Choose the loader you use before downloading.

No matching file appears among the releases shown here. Browse all releases.

Most recently published release

2.3.1release20 Oct 2025

post-office.external

Download this release
Older versions17
  • 2.3.05 Oct 202522 downloads
  • 2.2.126 Jun 202590 downloads
  • 2.2.011 Jun 202533 downloads
  • 2.1.129 Nov 2024345 downloads
  • 2.1.03 Nov 2024117 downloads
  • 2.0.229 Oct 202497 downloads
  • 2.0.129 Sept 2024110 downloads
  • 2.0.027 Sept 202490 downloads
  • 1.6.311 Sept 2024149 downloads
  • 1.6.214 Jun 2024128 downloads
  • 1.6.119 May 2024119 downloads
  • 1.5.329 Feb 2024125 downloads
  • 1.5.227 Jan 202494 downloads
  • Version 1.5.110 Dec 2023109 downloads
  • 1.5.012 Nov 2023121 downloads
  • 1.4.030 Oct 2023165 downloads
  • 1.1.03 Mar 2023124 downloads

Frequently asked

Does Post Office work on Minecraft 1.21?

Yes. 1.21 is the newest Minecraft version Post Office declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Post Office support?

Everything the author has declared, from 1.19 up to 1.21. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Post Office on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does Post Office support?

Spigot. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Post Office?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Post Office?

Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.

Where do I download Post Office safely?

Start with the author's page on SpigotMC, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from SpigotMC, where the author last updated it on 20 Oct 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

Not indexed yet. Score 49 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .