+Mailbox detection updated (remove clickAction from the letters_mailbox.yml)
+Letter send command upgraded
+Maximum letters per mailbox (default 10)
+Cannot send letters to players without mailbox
+Delete command gives the mailbox back
+Cannot get multiple mailboxes items except for admins

+PLAYER BLOCKING SYSTEM

• Block players from sending you letters
• Unblock previously blocked players
• View your complete block list with /letter blocklist
• Blocked players receive generic error message
• Block list saved in blocked.yml file
• Admin bypass permission: letters.bypass.block

+LETTER SENDING IMPROVEMENTS

• Send letters to specific mailboxes by name
• Send to unassigned/global mailbox with "global" keyword
• Auto-assign letters to first personal mailbox if no mailbox specified
• Better error messages when mailbox not found
• Show mailbox type icon when sending (Personal/Community/Public)

+MAILBOX SYSTEM

• Create personal mailboxes (private, only you)
• Create community mailboxes (shared with members)
• Create public mailboxes (accessible by everyone)
• Add/remove members from community mailboxes
• Delete mailboxes with permission check
• List all your mailboxes with status
• View mailbox information (location, type, members)
• Sync unassigned letters to specific mailbox
• Configurable mailbox limits per player
• Unlimited mailbox permission: letters.mailbox.unlimited
• Auto-assign old letters to newly created mailboxes

+3D CUSTOM MAILBOXES

• Support for resource pack 3D models
• Classic mailbox type (iron block + fence)
• Custom mailbox type (barrier + 3D model)
• Armor stand display entities for 3D rendering
• Rotation based on player facing direction
• Configurable custom model data
• Optional base block requirement

+PARTICLE EFFECTS

• Particle effects on mailboxes with unread mail
• Dynamic particle count based on unread letters
• Customizable particle types (FLAME, REDSTONE, VILLAGER_HAPPY)
• Configurable spawn interval
• Particle multiplier system
• Min/max particle limits to prevent lag

+VISUAL IMPROVEMENTS

• Title notifications when receiving letters
• Sound effects for sending, receiving, opening
• Custom menu titles per mailbox type
• Status indicators for unread/read letters
• Mailbox type icons in messages
• Empty mailbox information item

+PERMISSIONS SYSTEM

• letters.mailbox.personal - Create personal mailboxes
• letters.mailbox.community - Create community mailboxes
• letters.mailbox.public - Create public mailboxes
• letters.mailbox.unlimited - Bypass mailbox limits
• letters.mailbox.manage - Manage community members
• letters.mailbox.delete - Delete any mailbox
• letters.block - Block/unblock players
• letters.bypass.block - Bypass player blocks

BUG FIXES

• Fixed: Letters not opening when clicked in menu
• Fixed: Barrier item (empty mailbox) was clickable
• Fixed: Items could be moved/taken from letter menu
• Fixed: Menu detection system improved
• Fixed: Tab completion for block/unblock commands
• Fixed: Mailbox particle effects now working correctly

NEW COMMANDS
/letter block <player> - Block a player from sending you letters
/letter unblock <player> - Unblock a player
/letter blocklist - View all blocked players
/letter mailbox create <type> <n> - Create a mailbox
/letter mailbox list - List your mailboxes
/letter mailbox delete <n> - Delete a mailbox
/letter mailbox addmember <mailbox> <player> - Add member to community mailbox
/letter mailbox removemember <mailbox> <player> - Remove member
/letter mailbox sync <mailbox> - Assign unassigned letters to mailbox
/letter mailbox info <mailbox> - View mailbox information
/letter mailboxes <player> - View player's accessible mailboxes
/letter send <player> [mailbox] - Send letter to specific mailbox
/letter send <player> global - Send unassigned letter
/letter getmailbox [classic/custom] - Get mailbox item

CONFIGURATION

• Fully customizable messages and colors
• Configurable sounds for all actions
• Particle effect settings (type, count, interval)
• Mailbox limit settings
• 3D model display settings
• Custom model data configuration
• Auto-assign letters option
• Date format customization
• Debug mode

FILES CREATED
letters.yml - Stores all letters
mailboxes.yml - Stores mailbox data
blocked.yml - Stores player block lists
config.yml - Plugin configuration

COMPATIBILITY
Minecraft: 1.18 - 1.21.11
API Version: 1.18+
Dependencies: None required
Optional: LuckPerms for advanced permissions

INSTALLATION

1. Backup your server
2. Stop your server
3. Replace old Letters.jar with new version
4. Start server
5. Configure settings in config.yml
6. Reload with /letter reload