The question is why? If you have a reason and you can state that reason clearly, I don't see any reason to hesitate. Don't just give the person your email. Make sure they know why you're giving it to them, so that they'll know how to reply to you. As with any interaction, the key is to be smooth. Let the conversation flow, and if something comes up, use that advantageously.
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Remember, all atrocities begin in a sensible place.