What problems should I pay attention to when sending text messages to my elders?

It is very simple to use honorifics. Whether it is business or personal, there are two kinds, one is to say something to the other party, and the other is to simply say hello.

If you want to say something, simply say hello, I am from a company, or I am someone's object. Then say if I have any questions, I want to communicate with you and see if it is convenient for you to answer the phone. Then talk about things on the phone.

If you say hello, it's just a simple greeting after you sign up. For example, recent weather changes, pay attention to health and so on. If you are the elder of your partner, you can also add someone who always mentions you, and so on.

The general principle is to be polite but not humble.