Messages that are Message-Id based counts do not include any message
that was found to have an X-Mailer header. Each Message was only classified by the first match found.
You should check User-Agent before checking X-Mailer; it's more commonly used, and many mailers will put identifying details in User-Agent and cruft in X-Mailer. For example, User-Agent makes it clear that the messages sent with an X-Mailer of:
210 => 'Some Outlooks can't quote properly without this header'
are in fact sent by certain versions/distros of Mutt.
I learned this while starting to do this analysis, but I gave up when my video driver bluescreened on me. This was the first bluescreen I've gotten since I built this computer, and decided it was a sign that I'm not supposed to complete the analysis for some important reason or other.
This is not going to be 'scientifically' accurate by any means, a better solution would be to take into account individual posters.., but this should give a good feel of the MUA's used, and Pine wins by far (not includeing all of those 'Who_Knows' results ;)
The dedupe by poster is probably a critical step in this analysis; it's worth noting that Phillip and Tony both use Pine, which probably blows the Pine numbers way out of proportion.
- Marc
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