Using Spamsieve 3.0.1, having followed the migrate from earlier versions instructions as closely as I can, the Train Good, Train Spam menu items are not appearing.
MacBook Pro 15 (2018)
MacOS 14.0
Due to changes in macOS 14, the training commands have moved from the Message menu in Mail to the SpamSieve menu bar icon and SpamSieve Dock menu (if you click and hold on the Dock icon):
