How are you in professional email?
Formal email
It is better to express interest in the person's well-being by starting with one of the following statements: I hope all is well. I hope all is well with you. I hope this message finds you well.
Formal email
It is better to express interest in the person's well-being by starting with one of the following statements: I hope all is well. I hope all is well with you. I hope this message finds you well.