MailboxGUI

# MailboxGUI 5.1.0 Changelog MailboxGUI 5.1.0 is a major stable update that adds Book Letters, expanded COD item-currency support, API 5.1.0 payloads, improved admin inbox tools, network-mode validation, and Paper/Purpur 26.2.x compatibility. ## Important Notes - MailboxGUI 5.1.0 is required for Paper/Purpur 26.2.x compatibility. - MailboxGUI 5.0.1 and older do not support 26.2.x sign updating correctly. - MailboxGUI-DiscBridge users should update to MailboxGUI-DiscBridge 1.1.0 or newer for full 5.1.0 notification support. - Dynmap markers are not supported on 26.1.x or 26.2.x, but core MailboxGUI features still work normally. - Back up your server and `/plugins/MailboxGUI/` before updating. ## Compatibility Supported server versions: ```text Spigot/Paper/Purpur 1.18.2 through 1.21.11 Spigot/Paper/Purpur 26.1.x Spigot/Paper/Purpur 26.2.x ``` ## New: Book Letters MailboxGUI now supports Book Letters alongside Classic Paper Letters. Book Letter features include: - Real Book and Quill writing flow - Protected temporary draft book - Sign-and-close sending - Safe cancel support using `cancel` - Logout cleanup protection - Original hotbar item restoration - Reply links for player-sent inbox Book Letters - Back to Inbox links while reading from the inbox - No reply links for admin/server/API Book Letters - Inbox-only clickable actions removed when a Book Letter is taken from the inbox Player flow: ```text /mailbox Send Mail Letter Book Letter Select Recipient ``` Admin flow: ```text /mailbox admin tools Send Mail Letter Book Letter ``` ## New Admin Book Letter Command Added: ```text /mba sla '' --title