Added MyProperties to set up the smtp-properties which will used for the
session with the server. It is possible to use smtp or smtps. Additional
added the Mailer which will send the mail. 
MailTester is of course up to date. Used are the smtp servers from
bluewin. Other servers are not yet tested. Feel free to test it.
Everything is comment out, hopefully enought =)
That the Authenticator must have the username and password in plain text
is not really nice. But didn't get a better solution at the moment. The
mail_it@bluewin.ch was extra built for this case.