def not_wanted?(email)
  unwanted=%w[aol.com aussiemail blazemail canada.com gmail.com yahoo @canoemail.com @animail.net @moose-mail.com @snail-mail.net @whale-mail.com @wildmail.com @dbzmail.com @dcemail.com @didamail.com doramail.com @emailaccount.com @fastmail.fm @myfastmail.com @fastemailer.com @eml.cc @letterbox.org @fastermail.com @gawab.com @graffiti.net @hotmail.com @hushmail.com @hush.com @hush.ai @icqmail.com @indiatimes.com @kids.co.uk @kittymail.com @linuxmail.org @lycos.com @mail2 @mailpanda.com 138mail.com asiamail.com koreanmail.com mailasia.com @marchmail.com merseymail.com @myway.com @operamail.com @orcon.net.nz @outgun.com @postmaster.co.uk @prontomail.com @rediffmail.com sacmail.com @sandiego.com @safe-mail.net @stalag13.com @surfy.net @tmicha.net @ureach.com @uymail.com @vfemail.net @wapicode.com @webmail @weekonline.com suemail @yyhmail.com @ymail.com]
  unwanted.each do |x|
    if  email.include? x.to_s
      return true
    end
  end
  return false
end