David Golden writes: > In response to other questions about "X-foo", I was mirroring the RFC > 822 email spec
Yeah; that's why I'm so hostile to the idea! Mail headers have X-Mailer: but User-Agent: without the X-; and X-Mailing-List: but Posted-To: and List-Id: -- from a user's point of view it's arbitrary which headers have X- and which don't, and very hard to remember. Smylers