iOS mail supporting list-unsub header


Al over at SpamResource reports that the next generation of Apple’s iOS has support for the list unsubscribe header.
To the best of my knowledge, this is the first time an independent email client has built in support for the List-Unsubscribe header. Microsoft and Google support it, but only in their webmail system. Hopefully other mail clients will follow suit.

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  • It only supports mailto with only a subject tag in the link. If the List-Unsubscribe header contains multiple options, the mailto-tag needs to be first, otherwise it does not work (Google and Microsoft work the same).

  • this feature is nice but has it’s disadvantages: is sending a mail using the account informations from
    therefore the returnpath of this mail must not be the same address which is subscribed – so you need to identifiy these unsubscribe-requests with other methods than taking returnpaths.
    even worser it betrays email-aliases or forwarders or other connections between addresses which you eventually don’t want to share with emailmarketers …

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