You want to greet the teacher. what do you say?

Maybe hello, how is your day etc.

Google search

use a salutation and signature.history of jumping right into your message or saying "hey,"begin with egg reading like"hello" or"good afternoon,"and then address your professor my appropriate title and last name. such as"proof. Xavier"or " Dr. Octavius."

¡Hola! como estas mr o ms hoy