What does a user see if he enters an invalid email address during registration?

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This will make their mailing list manager think your address was invalid, and you'll be excluded from future mailings.

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Entries submitted by any other individual or any entity originating at any other Internet web site or e-mail address, including but not limited to commercial sweepstakes subscription notification or entering service sites, will be declared invalid and, as such, ruled ineligible for this promotion.

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