How to auto-open file in iPhone Mail into iphone application?

I am working on adding the capability for users to export data from my iphone app. I'd like to allow them to email it to themselves or to a friend. Is there a good way to enable the iPhone mail app to auto-open a specific type of file into a specific app? I know that I could somehow create a specific URL which would open such as myapp://www.google.com which would auto-open into my app, but can this be done开发者_StackOverflow社区 with an attached file?

Thanks!

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Take a look at this answer: Data Exchange between same iPhone App on separate devices