Since SB are in California, they are subject to this. As I understand it, that means that any email or web-receipt such as those above are legally acceptable.

It does occur to me, however, that SB are bankrupt. The company still exists, but you might have difficulty bringing suit against a bankrupt company, should they decide not to honour this "offer". At the very least, you'd have to get in line behind everybody else.
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-- roger