Mac Mail app does not show that header by default. :-) It can be added in the Viewing tab of Mail preferences.
iOS Mail app shows a smart unsubscribe link when applicable, whether based on that header or others too, but Mac Mail does not. > On Jan 3, 2018, at 17:20, Dave Horsfall <d...@horsfall.org> wrote: > > On Wed, 3 Jan 2018, servi...@increa.com wrote: > >> The macports mailing list is burying me email! How can I un-subscribe? > > The same way you subscribed, only in reverse :-) > > Seriously, every email sent out contains this in the headers (like a > good mailing list should): > > List-Unsubscribe: <https://lists.macports.org/mailman/options/macports-users>, > <mailto:macports-users-requ...@lists.macports.org?subject=unsubscribe> > > Is not your mail client reminding you of the presence of this header? If not > then you should find a better one. > > -- > Dave Horsfall DTM (VK2KFU) "Those who don't understand security will suffer." >
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