I would assume that you will have to manually construct each MIME part and encode its body to the encoding you want. Encoding to utf8 (via encode('UTF-8', $payload)) and setting the appropriate Content-Encoding headers should work, because afterwards you only have an octet stream to deal with anymore.

In reply to Re: Encoding/charset Aware MIME Email Generation by Corion
in thread Encoding/charset Aware MIME Email Generation by sapphirecat

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