iOS App Review - app got rejected because it asks for user's email
I have developed an iOS app and it got rejected recently. This is the reply from the app review team:

> At your earliest opportunity, please review the following questions and provide as detailed information as you can in response. The more information you can provide upfront, the sooner we can complete your review.

> 1. Why does the user need to provide Email address to create an account in order to have access to the app? 

> Once you reply to this message, we can proceed with your review.

I understand that one of App Store Review Guidelines is that:

> Apps that require users to share personal information, such as email address and date of birth, in order to function will be rejected

The app is for a social networking website. The user account is based on their email. Without user's email to sign up or log in, the app cannot retrieve any information from the server. I see other apps that require user's email to log in or sign up (e.g. facebook app). I wonder how I can ask for user's email in the app and also get it approved by Apple.  Thanks.
iOS App Review - app got rejected because it asks for user's email
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I have developed an iOS app and it got rejected recently. This is the reply from the app review team:

> At your earliest opportunity, please review the following questions and provide as detailed information as you can in response. The more information you can provide upfront, the sooner we can complete your review.

> 1. Why does the user need to provide Email address to create an account in order to have access to the app? 

> Once you reply to this message, we can proceed with your review.

I understand that one of App Store Review Guidelines is that:

> Apps that require users to share personal information, such as email address and date of birth, in order to function will be rejected

The app is for a social networking website. The user account is based on their email. Without user's email to sign up or log in, the app cannot retrieve any information from the server. I see other apps that require user's email to log in or sign up (e.g. facebook app). I wonder how I can ask for user's email in the app and also get it approved by Apple.  Thanks.