I thought some more about the is_header thing, and realized two issues: 1) My complaint against not being able to downgrade and upgrade freely is 10% valid and 90% ridiculous.
2) We should add a check to dbmail-util that can repair incorrect is_header markings. 1+2) The 10% validity of my complaint is alleviated by an attentive mail administrator who runs dbmail-util on a regular basis. So the worst case is that a few pieces of mail are inaccessible until the next run of dbmail-util. Was I the only objector to rolling in is_header support? If so, let's do this thing for 2.0.2 or 2.0.3! Aaron