get "/email/:address" do  
  from = Email.new(email: 'xiz2@andrew.cmu.edu')
  to = Email.new(email: "#{params['address']}")
  subject = 'test'
  content = Content.new(type: 'text/plain', value: 'and easy to do anywhere, even with Ruby')
  mail = Mail.new(from, subject, to, content)

  sg = SendGrid::API.new(api_key: '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')
  response = sg.client.mail._('send').post(request_body: mail.to_json)
  puts response.status_code
  puts response.body
  puts response.headers
end