How to Personalize the Standard Message that send Oracle When I create an activity

Summary:

I want to personalize the standard message that are send Oracle when an user create an activity

Content (please ensure you mask any confidential information):

I have this profile option set in YES:

ZMM_ACTIVITY_TASK_NOTIF_EMAIL

ZMM_ACTIVITY_APPT_NOTIF_EMAIL 

Because I want to receive the notifications in my email and my bell in fusion. But I want personalize the standard message that send me Oracle to my email. For example, when I create a Task, I receive this message in my email:

Now, when I create an appoitment, I receive this message:

But I want to personalize this message, for example, I want to add some images or add a message custom.