当你花了心血写好一封高质量的电子营销邮件（开发信）后，你需要明白一点：你收件人的垃圾邮件过滤器会获取你的邮件内容，包括主题和正文。过滤器可能由于多种原因而被触发，但通常是因为邮件内容包含了常见的垃圾邮件触发词。
单词是如何触发垃圾邮件过滤器的？
当你向朋友或同事发送电子邮件时，你完全不用担心垃圾邮件触发词；但如果你使用电子邮件发广告或开发客户，你就必须了解邮件发送背后的原理了。 你的部分或全部电子邮件最终都去到了垃圾箱的原因实际上非常简单：垃圾邮件检测机制使用智能算法来跟踪发件人的所有信息以及电子邮件内容的邮件，包括SMTP服务器信息，域名信息，电子邮件中的链接和图片，收件人，等等。一旦检测机制认为你的邮件很可疑，机制就被触发了。
关于垃圾邮件过滤器，你还还需要注意的几个方面
垃圾邮件过滤器随着时间的推移变得越来越复杂和智能，现在它们可以分析使用这些关键字的上下文（语境）。 当然，如果你需要向潜在客户发送营销类的邮件，那么你或多或少就会使用“traffic 流量”，“marketing solutions 营销解决方案”或“sales 销售”这些词语或表达方式，但你需非常小心地使用这些词汇，并找到一种巧妙的方式来合理替代。无论您是一次发送10,000封电子邮件还是一次发送1封电子邮件，只要你触发了垃圾邮件过滤器，你的邮件就会被屏蔽，更严重的是你或你公司的域名邮箱将被放到黑名单；反垃圾邮件技术在过去十年中发展成为一种高度监管和控制的技术，每年都会在发件人和收件人之间建立新的协议和机制。所以敏感词汇和触发机制不是一成不变的。在这里红板砖为你总结了2019年最新最全的垃圾邮件触发词（580多个单词或短语），而且我们还将继续增加和完善这个列表。
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