X-Yandex-Mid: 100500
X-Yandex-Suid: 9000
Content-Type: multipart/alternative; boundary="myboundary"

Hello, I'm preamble, I'm ignored :(
--myboundary
Content-Type: text/plain

Hello, world

--myboundary
Content-Type: text/html

<html>
    <body>
        Hello <b>again</i>
    </body>
</html>

--myboundary
Content-Type: text/xml

<?xml version="1.0" encoding="UTF-8"?>
<root></root>

--myboundary--
Good bye. I'm epilogue and I'm ignored too :'-(
