On Fri, Jul 5, 2024 at 5:31 AM Jeff Pang via mailop <mailop@mailop.org> wrote:
> > When an user requests to join mailing list, which address should we > take? The envelope address, or the header From address? > > For email subscriptions, we use the header From address. For email to a list, we look at the header From, Reply-To and then envelope address, in that order, to determine if they are a subscriber. Cheers, Mark
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