通过POP3读取邮件

  require 'net/pop'  pop = Net::POP3.new('pop3.example.com')  pop.start('YourAccount', 'YourPassword')              if pop.mails.empty?    puts 'No mail.'  else    i = 0    pop.each_mail do |m|         File.open("inbox/#{i}", 'w') do |f|        f.write m.pop      end      m.delete      i += 1    end    puts "#{pop.mails.size} mails popped."  end  pop.finish 

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更多例子请参考http://www.ensta-paristech.fr/~diam/ruby/online/ruby-doc-stdlib/libdoc/net/pop/rdoc/classes/Net/POP3.html