This whole argument seems to come down to the issue of whether random servers through which an email may pass will truncate lines to 78 chars. Several of us have pointed out that this does happen; Tass's experience is that it never (or vanishingly rarely) does. I don't know if anyone can provide hard information about what proportion of mail servers out there, running what software, are likely to do this?
Just my attempt to extract something useful from the noise :-) TimH
