We received a frightening chain letter yesterday.

昨天,我们收到了一封恐吓性质的“连锁信”.

In some ways it 's just a mimic of an old-school snail mail chain letter .

在某些方面，这只是一个模仿的旧学校蜗牛邮件连锁信。

This, like so many chain-letter hoaxes, has mutated over the years.

这一骗局多年来在互联网上不断发展和变异。