Robsaw, that's fascinating. I don't have a current Alaska reservation so I can't check. But just to be super explicit and leave no doubt: You're saying that the standard emails Alaska sends all passengers (with subject line "Your confirmation receipt: ...") systematically don't have the baggage charges, but the web site can produce a "receipt" which does? Any chance you can post screenshots of what this looks like on the Manage Reservation screen (what button to press) and on the resulting email?
Looking at 399.85(c), I don't think Alaska's practice (as described by robsaw) is compliant. 399.85(c) by its terms applies to "all e-ticket confirmations". Alaska sent me, and I think everyone, an email that is, by its own terms, a "confirmation receipt." It seems to me that a "confirmation receipt" just has to be an "e-ticket confirmation," all the more when it, uh, confirms the issuance of an e-ticket. To comply with 399.85(c), Alaska should have provided the baggage allowance in the standard emails, not in the special on-request emails that Robsaw describes.