What should I say when I send a text message to an elder who doesn't know myself for the first time? urgent .............................

It's very simple, whether it's business or personal, there are two kinds, one is to say something to each other, and the other is simply to 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.