How to send a message to the boss of a new company asking if he is qualified to work in his own company?

You can call him directly, which is the most direct and straightforward. No big deal. If you do it, you can't do it. It's actually quite troublesome to keep people waiting. If you can't, you're actually wasting your time. If you really want to send a text message, just ask him if he can go to work in a couple of days. Be direct, don't beat around the bush. .