== Filtering based on List-Id header ==

The "Has the words" field in GMail's filter editor apparently supports a keyword called listid.

Here is an example for filtering the www-html@w3.org mailing list.

{{{
List-Id: <www-html.w3.org>
}}}

Simply enter the following in Gmail's "Has the words" field:

{{{
listid: www-html.w3.org
}}}
----
CategoryCheatSheet