As a side effect, this breaks every reader which is unaware of it and handling binary content in mail (many, many messages) or languages or encodings which are space sensitive.
Anyaway, I'm not endorsing the leading-space technique. I'm just observing that it's out there in the wild.
As a side effect, this breaks every reader which is unaware of it and handling binary content in mail (many, many messages) or languages or encodings which are space sensitive.