文章是转过来的，很可惜我的Gmail中没有这个选项，但愿你的有吧。
Gmail早前才刚刚向埃及开放了注册，现在它又开始测试一项极其重要的新功能，那就是允许Gmail用户直接使用Gmail邮箱来收取非Gmail邮箱的邮件！这意味着当你正在使用Gmail邮箱和其它邮箱时，你只需要在Gmail里设置一下，以后只需登录Gmail，就可以同时管理你的所有邮件。酷？ 要实现这个功能，只需要进入”Settings”->”Accounts”，你会看到“Get mail from other accounts”（从其它帐户收取邮件）（注意：如果你没看到这个选项，证明你的Gmail根本没有加上这个功能！），再点击”Add another mail account”即可开始添加非Gmail邮件帐户，非常简单。需要更多详情，请点击这里看Gmail的帮助。（注意：这个才是新功能！）
在设置了这些非Gmail帐号后，你还可以在”Settings”->”Accounts”的”Send mail as:”设置你的不同发信地址，这样别人收到你的邮件时，看起来就像是从指定的邮箱发过来的。（注意：写这一段只是方便不熟悉Gmail的朋友设置，并不是指这个是新功能=.=）
这是一个极重要的功能！不过，我们仍然要注意的是：
1.最多只能收取5个非Gmail邮箱的邮件，不过相信已经够用；
2.指定收取邮件的非Gmail邮箱必须支持POP3并且已开启；
3.目前只有部分Gmail邮箱才拥有这个功能，但很快就会向所有Gmail邮箱开放。
我自己的Gmail显示不够走运。有更多详情，我会另外更新。(转自：http://www.creative-weblogging.com/cgi-bin/mt-tb.pl/45180)
下面是我找到的英文文章原文，估计中国的朋友，也会很快有这个功能吧，那样的话，以后我就不要隔几周查收下自己的163 、126邮箱了。
A feature about to be launched soon — and maybe already has for some of you — takes care of a highly requested feature and will make it even easier for users to switch to Gmail. It’s called Mail Fetcher, and it lets you check up to five different POP mail accounts right through your Gmail. This means you can now check accounts like your ISP address from within Gmail without setting up forwarding rules.
“Now Gmail can check for the mail you receive at your other email accounts. You can retrieve your mail (new and old) from up to five other email accounts and have them all in Gmail. Then you can even create a customized ‘From:’ address, which lets you send messages from Gmail, but have them look like they were sent from another one of your email accounts. Please note that you can only retrieve mail from accounts that have POP3 access enabled.” — Gmail “What’s New” page
The idea isn’t new, Yahoo offers the service for their mail application and Hotmail used to offer it years ago, but has since removed that functionality. Google is relatively late to the game, but judging by the response, people don’t care. If you have the feature enabled already, let us know how it works by leaving a comment.