Well, ever since email became popular, people have used snail mail to talk about paper mail, because it is slower thane-mail.

对，邮局寄的信和电子邮件相比真是要慢多了。叫它“蜗牛信”倒也挺形象的。

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For example,here in the U.S., medical records are still mostly kept on paper, and most doctors still rely more on fax than e-mail.

VOA: standard.2010.02.24

Most people wouldn't ever mail a letter or get a letter--too expensive, not to count only the paper and everything was expensive.

大多数人可能从未寄过信,或是收过信，因为太贵了，不单单是纸贵,什么东西都贵。

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