那么这3R原则到底指的是哪些内容?其实，3R是“Right time”、“Right way”和“Right person”，用中文来总结的话，就是我们在对的时间通过对的方式把外贸开发信发给对的人，再在一定运气的指引下，这封外贸开发信被客户打开阅读的机率就会有效增长一分。当然，3R原则是我们在写外贸开发信需要坚持的一个原则，除了这个原则之外，最重要的是我们还要做好外贸开发信的内容质量问题。但是今天我们探讨的重点主要3R原则，所以我们来具体分析一下这个3R原则吧。

首先是在对的时间。一般情况下，我们在给客户发送外贸开发信的时候，这个时间点的把握也十分重要。对于客户而言，周一的时候是大伙儿公认的比较忙碌的时期。在周一的时候，一般是客户刚上班的时候，这时候客户需要处理很多之前积压的工作，所以说这时候的客户在工作上都自顾不暇了，怎么还会有时间来看你的外贸开发信呢?当然周五也不是一个好时机，因为周五的时候客户有临近休息日了，所以这时候客户为了尽可能的为周一缩减工作任务量，他们在这一天也是十分繁忙。忙着整理各项工作，能解决的解决，解决不了的就会分好类，等待再次上班的时候来处理。周末的时候更不是好时候，这时候的客户正在休假时期，如果这时候给客户发来有关工作之类的事物，他们肯定心情不佳，给客户留下了一个不好的印象，从而不利于以后双方的深远合作，综上所述，我们要想给客户发开发信的话，最好在周二到周四之间来给客户发。除此之外，我们一定要考虑好时差问题，对于南北半球的问题，有时候我们这边白天，对方可能正值黑夜，所以我们一定要把握好这个时差问题，在合适的时间点给客户发送外贸开发信。

The first is at the right time. In general, when we send foreign trade development letters to customers, it is also very important to grasp this time point. For customers, Monday is generally recognized as a busy time. On Monday, it is usually when the customer just goes to work. At this time, the customer needs to deal with a lot of previous backlog, so at this time, the customer is busy at work. How can he have time to see your foreign trade development letter? Of course, Friday is not a good time, because customers are close to the rest day on Friday, so customers are also very busy on this day in order to reduce their work tasks on Monday as much as possible. Busy sorting out all kinds of work, those that can be solved and those that can't be solved will be divided into good categories and wait for them to be handled when they go to work again. The weekend is not a good time. The customers are on vacation at this time. If they send work related things to the customers at this time, they must be in a bad mood and leave a bad impression on the customers, which is not conducive to the far-reaching cooperation between the two sides in the future. To sum up, if we want to send development letters to the customers, It's best to send it to the customer between Tuesday and Thursday. In addition, we must consider the problem of time difference. For the problems in the northern and southern hemisphere, sometimes our side may be in the daytime and the other side may be in the dark, so we must grasp the problem of time difference and send foreign trade development letters to customers at an appropriate time.