如何获取用户@facebook.com 的电子邮件？
我试图查明用户是否有 @facebook.com 电子邮件用于消息传递，但看不到在哪里请求我确实为他们的常规电子邮件请求权限并且可以获得该权限，但无法看到在哪里获取他们的 @facebook .com 电子邮件。它不包含在 https://graph.facebook.com/me/ 中，因为无法保证他们已经设置了一个我不能假设它是基于他们的用户名
I am trying to find out if a user has an @facebook.com email for messaging but can not see where to request that I do request perms for their regular email and can get that, but can't see where to get their @facebook.com email. It's not included in https://graph.facebook.com/me/ and since there's no guarantee that they have set one up I can't assume that it's based on their username
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如果用户有 facebook.com 电子邮件地址，则该地址将是他们的 {username}@facebook.com。但是，仅仅因为用户设置了用户名，并不意味着有相应的电子邮件。自从 Facebook 抢占了他们以来，我就有了一个用户名，就在前几天，我为其设置了一个电子邮件。没有办法知道他们是否已经设置了它。最好的办法是询问用户您的应用程序可以使用的电子邮件地址。
If a user has a facebook.com email address it will be their {username}@facebook.com. However, just because a user has a username setup, doesn't mean there's a corresponding email for it. I've had a username since Facebook landrushed them, and just the other day I setup an email for it. There's no way to tell if they've set it up. Your best bet is to ask the user for an email address that your app can use.
只需进入您的隐私设置，然后在编辑您的电子邮件地址时，就会在那里设置一个 Facebook 电子邮件按钮。
Just go to your privacy settings and from there act as you are editing you email address then there is a Facebook email button setup there.