I'm pretty sure that we have uniformly agreed not to attempt to do MUA
design, so, no, it doesn't. We have no idea what is displayed in the
message. We have no idea if the message will ever be displayed at all.
John is right. Most headers are displayed selecting top-down
If you'll review the message you were quoting, I said "We have no idea
what is displayed in the message." I have done some experiements, and MUAs
are utterly inconsistent.
NOTE WELL: This list operates according to