Scrape email from yellow pages and send them email with 300 second delay

em = []
(1..63).each do |i|
yp = Nokogiri::HTML(open("http://www.yellowpages.com.my/search.jsp?sfor=all&name=logistic&w=&p=#{i}"))
emails = yp.search("a.email").map{|x| x["onclick"].gsub("SqueezeBox.open('/plainmail.jsp?id=", "").split("',")[0] }
emails.each do |eid|
  t = Nokogiri::HTML(open("http://yellowpages.com.my/plainmail.jsp?id=#{eid}"))
  em.push(t.search("input").first["value"])
end
InvoiceMailer.inquiry(em).deliver
sleep 300
end