The entire link is emailed out, but there is a space in it (which means that most mail programs will probably not recognize the second part as a part of the link).
However, the link won't work even if it's included as a whole, with the space, but the same seems to go for any special sign, for instance any signs with umlaut (like ä or ö).
I have only done some where quick testing on this, so there might be some other problem in my specific setup, but I figured it might be interesting to know.