How to filter the emails from this list

[Sten Daniel Sørsdal]

Dag-Erling Smørgrav wrote:
> Sten Daniel Sørsdal <lists at wm-access.no> writes:
>> I prefer to use 'X-Been-There' field as it's always the same if
>> e-mails are sent to freebsd-chat at freebsd.org or chat at www.freebsd.org
>> or the many variations.
> 
> The correct way to sort mail from Mailman lists is by the List-Id
> header, which will always contain the canonical list address with "@"
> replaced with ".".
> 
> DES

Thank you! Good to know. Either my e-mail provider or my mail program 
got a snag or i'm just too dumb to understand correctly. But i can 
honestly not find the 'List-Id' header field anywhere in my freebsd e-mails.

Could it be (afaik) an undocumented feature in Thunderbird?

-- 
Sten Daniel Sørsdal

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