In the last episode (Apr 23), Jonas Wallden said:
> <sascha.n[at]aon.at> wrote:
> > When an email sent with <email>/ contains a long line (~1000+ chars), at
> > some point spaces are inserted into the message "randomly".
> Grubba is the expert on this but it's supposedly a line length limit part
> of SMTP. We've encountered the same thing when generating HTML emails and
> since randomly inserting linebreks isn't always safe we chose to use
> base64 transfer encoding instead.
quoted-printable might be a better choice; if your data is mainly text it
will only be slightly larger than unencoded, and is still mostly readable