似乎***的做法是始终在您的请求中使用userId ="me".这告诉API仅使用经过身份验证的用户的邮箱-无需依赖电子邮件地址.

Seems like best thing to do is to just always have userId="me" in your requests. That tells the API to just use the authenticated user's mailbox--no need to rely on email addresses.