Setting the mail sender's name, fix issue #448

Hi! 

Gmail appears to be not accepting characters like "<" and ">" into the 'From' field (at the Send method).

However, gmail accepts the syntax `From: SOME NAME <SOME@MAIL.COM>` at message body.  

So the fix is just send only the email(without alias and special chars) at Send method.
Hmmm, maybe I'm just a little bit paranoid, but I'm thinking about the cases where the email addresses come from a non sanitized database (eg.: the address is stored as '&lt;sender@abc.com&gt;')

If we let "&lt;" and "&gt;" the mail will return syntax error...

Or we should just let the user handle this?