Did you know that students have a school email address? It's [username]@inst.hcpss.org, and it can be accessed using the link provided at https://hcpss.me.
Students may simply scroll to the bottom and select "Office 365 Email" and login with the same username and password that they use for Canvas and other school services. The advantage of using this email address is that they can send messages to their fellow students and their teachers just by typing in their first and last name; Office 365 will match it to their existing email address without the sender having to know it.
This email address receives most Canvas notifications and can be used in the same manner as any other email service. Just be mindful of the fact that, like Google Drive, it will not follow students after they graduate, so they should avoid using it to register on websites they will still need to access later in life.