Empower can generate an email message to all the students on your roster.
You can also send messages to students via Canvas. (Link to article)
Empower sends the message to the email address in each student's Empower profile. This is normally an @IAIA.edu email address; not the student's personal email account.
Sending an Email Message
1. Display your class roster.
Empower sends your message, with any attachment included. It also sends a copy to your own email address.