(keitai-l) Encoding Japanese in email subjects

From: Darren Cook <darren_at_dcook.org> Date: 05/13/03 Message-ID: <3EC05B5A.8040409@dcook.org>

Hi,
We're sending email to mobile phones, and have a subject that is kanji, then 
an ascii space, then more kanji, then another ascii space, and then some 
ascii text.

Encoded it looks like this:
   =?iso-2022-jp?B?AAAAAA=?= =?iso-2022-jp?B?ZZZZZZZ=?= asciiascii
(where AAAAA and ZZZZ are strings of base64 characters)

This apparently works fine on i-mode and j-phone, but on ezweb the space 
between the two kanji strings does not appear. On mozilla 1.2 it also does 
not appear.

Is the above encoding correct? Or is whitespace allowed to be stripped 
between encoded blocks?

Darren