in reply to Re^2: Usage of cid
in thread Usage of cid

When attaching an image to a MIME multipart mail (either multipart/related or multipart/mixed), you can give the image a Content-Id header with an arbitrary cid value.

In the HTML body of your mail, you can then reference those cids again to display images.

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Re^4: Usage of cid
by LanX (Saint) on Jun 05, 2018 at 10:59 UTC
    >  arbitrary cid value.

    AFAIK should the content id be globally unique, some mail clients use it for caching.

    It's a good idea to prepend a unique mail id

    Cheers Rolf
    (addicted to the Perl Programming Language :)
    Wikisyntax for the Monastery

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