Auto-renewable subscription, how to get the user (client) email address and zip code?

How can I get the user e开发者_JS百科mail address and his zip code address when I'm validating an receipt got from an auto-renewable item receipt?

When the user buys my item he has to agree with providing me contact data like email, zip code and so on... but so far I found no way to get the email using the StoreKit API.

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You can find informations about a new tool published by Apple in order to download Opt-In Reports, containing informations about user subscriptions infos, here : AppStoreReportingInstructions.pdf See 3.2. Auto-Ingest Tool