NIOSMTP: should implement escaping #33
Description
Expected behavior
NIOSMTP's should escape things like names and the body of an email so you can send anything without errors.
Actual behavior
Nothing is escaped, for example putting an line just containing a full stop (.) in an email will cause an SMTP protocol error. The emails should be properly MIME encoded instead.
Steps to reproduce
Try to send an email with NIOSMTP containing a line with just a full stop.