Nothing is more annoying than receiving unnecessary email messages. Therefore, as an administrator, you can choose what users will or will not receive email about. You can also choose a notification in the platform or no message. You can also change the text of all e-mail messages and write in your own style. This helps with acceptance.
As an administrator you can adjust all email templates, so that users are addressed in a way they are used to. There is even a "communication" role to leave this to the specialist(s). Communication in a security awareness program is the most important thing. So make sure that the necessary time and attention is given to this.