> If binary data is encoded in quoted- > printable, care must be taken to encode CR and LF characters as "=0D" > and "=0A", respectively. In particular, a CRLF sequence in binary > data should be encoded as "=0D=0A". Otherwise, if CRLF were > represented as a hard line break, it might be incorrectly decoded on > platforms with different line break conventions.
とあるので、"should"の解釈にもよるけど、Mewだけじゃなく、 バイナリ中のCRLFをhard line breakにしちゃうOutlook側も改善の余地ありか。
