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There is an email interface to subscribe and unsubscribe membership of the lists of lists.archlinux.org.
As far as I am aware of, the email interface is announced by:
The general guidelines wiki article.
The welcome message which is sent after one subscribes to each list.
I think such announcement should also appear at lists.archlinux.org.
As far as I know, the software behind the lists is able to accept email adjustments to the subscription, in addition to subscribing and unsubscribing by email. Indeed the current welcome message does announce this capability. Yet when inquiring the software for instructions by email, it only tells about subscribing and unsubscribing. I think adjustments to lists subscriptions should be fully implemented by lists.archlinux.org.
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