Old customers of doors and windows maintain short messages.

You mean, like what kind of SMS is like affiliate marketing? You can send a message like this: Dear customer, it has been (time) for one year since you bought a certain door in our store. If you need maintenance, you can contact our store. If what you want is similar to this, I can help you think a lot. The key depends on what the main meaning of your message is! I've only received supermarket integral messages from onesmser SMS platform. Dear Carrefour members, you bought goods worth 263 yuan in this supermarket on 1 1: 26, and got 263 points. You can log in to Carrefour account for inquiry.