How do I email individual students in Canvas?
If you look at the bar on the far left of Canvas, you'll see the "Inbox" in the column of options. If you can't see any text on the left and its just icons, you want the icon that looks like a piece of paper sticking out of a box.
Once you click the inbox, you'll have the ability to make a new message. From there, its similar to email - enter the student's name, write your message. In general I find the Inbox way more useful than traditional email. Here are some articles about the Inbox that goes more in-depth with screenshots.
Here is some great Canvas documentation that shows how to message students in Canvas. It says as a student but the same steps apply for instructors as well.
How do I send a message to a user in a course in Conversations as a student?
Welcome to the Community!
After you have gone to the Inbox and clicked to begin composing a new inbox message, you can select the course and then you the person picker to select specific students. Please see the screenshot below:
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