To set email notifications from CRM, select your user picture at the top right of the screen and select Settings.
Schedule emails for all activities and meeting invitations
Under Email notifications tick 'My activity and meeting invitations', as shown below.
Schedule 'My Agenda' emails
Under Email notifications tick 'My Agenda at' and choose which time you'd like the email delivered. Check your email address and time zone are correct.
Note this feature requires SMTP settings configured. If in doubt about this, check with your administrator.
Tip. If you don't receive the first scheduled email, check your email clutter or junk folders.