Q. Why do I get an undeliverable message when trying to send from the Course Emailer?

The email associated with the course emailer must be the same as the email that you are trying to send from. Go to the list of emails/names in the course emailer and check the email listed next to your name.  The course emailer will only allow you to send from that email address.  If you want to send a different email address, you’ll need to change the default email you have listed in Canvas.