Have you taken a look at Mail::Sender? I've used it on Win32 to send attachments and plaintext alternatives with no problem. It also does STMP authentication.

In reply to Re: e-mail attachments on Win32 w/ Net::SMTP_auth & Net::SMTP::Multipart by jfluhmann
in thread e-mail attachments on Win32 w/ Net::SMTP_auth & Net::SMTP::Multipart by ff

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