RFC 2822 says that to fold, you insert a CRLF *before* the whitespace at which you want to break the long header.
I was using SPILL 78 / / KEEP for this. However, SPILL leaves the trailing space on the first line (in essence, it has inserted the CRLF *after* the whitespace). Any chance of a variant of SPILL to get it to (effectively) insert the CRLF *before* the whitespace? Or in general, if for instance I weren't using whitespace as the spill target, to (in the presence of KEEP, of course) add the spill target to the subsequent line? Alternatively, is there another approach to the problem that would avoid the issue? Bob
