Ruby and Regex and POP

I have 2 questions:

1.) -------------------
How to write a string.split command that will take the following line and return an array of 2 email addresses:

To: "Stuart Smith" <stuart@email.com>, "Community" <comm@email.com>


2.)--------------------
I built a pop3 reader using something very similar to below however, I am looking to store the actual attachment as the mime-type itself like a PDF.  Any help?

   

POP3.start('pop.example.com', 110,
               'YourAccount, 'YourPassword') do |pop|
      n = 1
      pop.mails.each do |popmail|
        File.open("inbox/#{n}", 'w') do |f|
          f.write popmail.pop
        end
        popmail.delete
        n += 1
      end
    end

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