我已经收到了来自全世界的几百封书信，电子邮件还有很多来电；他们大多数都是在感谢和祝贺我们，但是有时候也会收到包含强烈批评和担心的信件。

I've gotten hundreds of letters, e-mails, and phone calls from people around the world; many times these are to thank and congratulate us, but sometimes we get letters of strong concern and criticism.

youdao

人际传播包括了与顾客之间的个人接触，这种接触的形式可能是书信，名录，个人专访，电话交谈以及电子邮件。

Personal communication includes personal contact with customers, which may be letter, memos, personal interviews, telephone conversations and email.

youdao