Rails 删除标题中包含某些文字的 email 2015/11/18 35971 清华大佬耗费三个月吐血整理的几百G的资源,免费分享!....>>> require 'net/pop' mail_server = Net::POP3.new('mail.mailservernamehere.com') mail_server.mails.each do |m| m.delete if m.header =~ /Subject:.+?medicines\b/i end