This works great. My only concern is that this app is used by other people, and the sender is always the e-mail account of the people instead of the e-mail I had created. I know that when people open the app it asks the e-mail account who have to be used. It is possible do this work only with the data source from outlook 365 that I had created before?
I tried to add the "From" option in my code, it will not work too, 'cause this people don't have direct access to this e-mail account.