PopMan

popman 是一款开放原码的免费软件，使用者只需要把自己支持 pop3 的邮件信箱输入其中并且完成设定，那么 popman 就可以每隔一段时间自动帮你检查信箱中是否有新的信件，并且弹出提示窗口来提醒你。而使用者可以直接从提示窗口知道是由谁寄来的这封信件，并且决定是否要收下它或远程删除，省去下载回每封信件所耗费的频宽。

PopMan is a POP3 and IMAP4 manager. It can be used to list all e-mails received on your incoming mail server, without having to load these mails completely. Unwanted e-mails can be deleted directly from the server.You can use PopMan to check your e-mail accounts in the background. When new e-mails arrive, you will be notified.