On Sat 19 Nov 2022, at 20:15, Gareth Evans <donotspam@fastmail.fm> wrote: [...] > I'm not sure this is a Tb bug, just perhaps a "purist" way of doing > things ... I had assumed no blank line preceding a boundary was required as Tb still processes the boundary without one, but https://www.rfc-editor.org/rfc/rfc2049.html#page-15 suggests this is in fact a requirement. So perhaps a bug. G