When should I send text messages to my clients every week?

As you are sending it to a customer, it is suggested to send it around noon (meal time) 12 on Tuesday. Why not on weekends? It's simple. Take the weekend off! The customer has a text message, and you can't see it at a glance! Waste! As for Monday, it's time for people to go to work, and the first day is busy (I just came back from a break and didn't enter the state)! Because most people are busy on Monday and will go to work on Tuesday, this time is more appropriate and easy to remember!