代邮记号 postage stamps

代办邮寄 Mailing Service

现代邮政物流 postal logistics

回邮代金券 reply coupon

邮局代封条 Offical Sealing ; Omitted Perforation

快邮代电 mailed telegraph ; mail telegram

邮件代理模块 Mail Proxy

邮件代理软件 mail agent software

现代集邮 Mophila ; Modern Philately