Physical Mailboxes
Players can use in-world mailbox structures to access their mail. A physical mailbox is built with a fence post, a single chest on top, and a sign attached to the front of the chest.
Minecraft Mailbox Plugin for Paper and Spigot
MailboxGUI
MailboxGUI is an advanced mailbox plugin for Minecraft Paper and Spigot servers. It brings physical mailboxes, letters, packages, COD packages, money mail, post offices, admin tools, and flexible storage into one polished server mail system.
Features
Core tools for server mail, delivery, economy, and administration.
Letters
Send written messages between players through the mailbox system, making player communication, roleplay, staff replies, and server notices easier to organize.
Packages
Send item deliveries through MailboxGUI using configurable package slots. Packages can hold normal items and, when enabled, package experience.
COD Packages
Cash-On-Demand packages let the recipient preview a delivery and pay before accepting it, making player shops, trades, and marketplace-style delivery easier to manage.
Money Mail
Send economy currency through the mailbox inbox system when Vault and a compatible economy plugin are enabled.
Post Offices
Create public Post Office boxes that let players access their own mailbox menu from shared server locations like towns, spawn, markets, banks, or mail rooms.
NPC Support
Use Citizens NPCs as Post Office access points so players can open their own mailbox menu through marked server NPCs.
Admin Tools
Staff can send server mail, inspect player inboxes, manage registered mailboxes, create Post Office access points, and use admin delivery workflows.
Storage Support
MailboxGUI supports YAML, SQLite, and MySQL storage, including safe upgrade handling for legacy YAML data and storage conversion tools.
Multi-version Support
Supports Minecraft server versions 1.18.2 through 1.21.11, plus 26.1.x compatibility.