The Lua management function 'VPOP3.RenameFolder' renames a folder for the specified user.

VPOP3.RenameFolder(username, folder, newname);

• username is the username from VPOP3.GetUsers
• folder is the folder from VPOP3.GetFolders
• newname is the new name for the folder.

Note that folder names are in the IMAP4 UTF-7 encoding not plain text (see RFC 3501 section 5.1.3)