...

textareas give you scrolling, which is useful when the message you're rejecting has, for example, a 1MB MIME-encoded attachment.

Except that Mailman already cuts the content down to a pretty short max size in the texarea anyway, so this would never be an issue...

Not my Mailman. (That's configurable.)

Also, reading separate scrolling windows is cumbersome compared to scrolling the main browser window, and takes *more* screen space for very short messages, not to mention the difficulty in Lynx :( Most efficient could be a very concise:

<pre> Date: From: Subject: These already above? < Link to full message text >

Configurable first few lines... </pre>

but seeing the exact full headers is very useful to figuring out the real disposition of the message, at least to me. *all* headers, plus *all* message text, is a useful thing (to me). Yeah, if you just wanted a few lines, the current display uses more space...but that quickly turns to a false economy, IMO.