When a message is sent from eLearn to an instructor or student, the subject line will be auto-populated to begin with the name and section of your course. It will end with this symbol >. You can take advantage of this similar subject line to create a rule that will move all your messages from a specific course into a folder in your inbox. Using the example image below, you would make a folder for your CHEM 1030 C01 section. You may also want to add a semester identifier to the folder name as you may have the same course and section number again in upcoming semesters.

Set up rules
The steps to set up rules are specific to the version of Outlook that you are using. See this Microsoft Support article for step-by-step instructions.
Link to Microsoft Support page: Manage email messages by using rules in Outlook