我已成功使用以下流程测试迁移了一个 Mailman 邮件列表：
现在，来自该 Mailman 列表的大量用户已处于待处理状态。这些用户需要做什么才能登录新的 Discourse 社区？
To sign on staged users must create a new account “sign up” using the same email from the mailing list. They’ll receive an email verifying that they own the address entered, and once verified they’re good to go.
It’s all about the email address matching. Remember that to Discourse, email address = identity. This is absolutely central to how Discourse works.