Enrollment Email Notifications why sometimes doesn't get sent

82711010bc61080
Community Novice

Can someone clear up the mixed communication I'm finding out on the Community with if/when do email notifications get sent out to faculty and students when enrolled in a course?   I've found some Canvas community posts stating if manual enrollment NO EMAIL gets sent but then found another post stating NO EMAILS sent if SIS Import done for enrollments. 

We are trying to find out why a lot of faculty and students for a term did NOT get the enrollment email notification from Canvas.  Some did and some didn't and it might be due to this manual versus SIS Import versus API calls and might be different for faculty vs students??  

#enrollment_notifications