从侧边栏的“消息”中移除收件箱

[MarcP]

所以为了参考回答这个问题：

收件箱必须是空的，包括存档。然后等待最多 12 小时，或者：

Messaging: Group inboxes and archives show even after all messages deleted

Note you can manually kick off the weekly task by going to /sidekiq/scheduler searching for Weekly and triggering that.