How does the company send text messages to employees who leave their jobs?

It depends on what the situation is. If you have just left your job and some things at work have not been handed over clearly, you can choose the key points and ask how to deal with the above employees! Let him help! I certainly won't refuse. If you have left your job for a long time, it's been a while. That depends. If the company has good news or is helpful to him, you can contact him and see what the other person thinks. If it is work-related, you should consider it as appropriate. After all, leaving has nothing to do with the company. It would be awkward to contact him again!