Mailboxes
Mailbox Mod lets you send items to other players through in-game mailboxes! Drop items into a mailbox, write the recipient’s name, and they’ll receive their package instantly, even if they’re offline.
Screenshots
About this Mod
📬 Mailbox & Packages Mod – Description
The Mailbox & Packages mod adds a simple and immersive mailing system to Minecraft. Players can craft and place mailboxes, allowing them to send items to other players as packages.
To send a package, place items inside a mailbox and select the target player. Once sent, the recipient will receive the package directly in their own mailbox, even when they are offline. This makes it easy to trade, gift items, or send supplies to friends on multiplayer servers.
Perfect for SMPs, roleplay servers, and survival worlds, the mod adds a fun and realistic way to deliver items without needing to meet in person.
Available Versions
How to Install Mailboxes on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.10).
Install Mod
Open the mod browser in the dashboard and search for "Mailboxes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.10, 1.21.9, 1.21.8 (+3 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Mailboxes server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.
Is Mailboxes compatible with fabric?
Mailboxes officially supports fabric for Minecraft 1.21.10, 1.21.9, 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Mailboxes – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Mailboxes consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install Mailboxes with just one click on your server.