Send Muire a proper professional email. Your introductory section should include any (school appropriate) information you would like me to know about you, what on-campus activities you participate in, and a book you enjoyed reading. Your middle section should address what, if anything, you might be considering as a career choice or field; if you don't have any idea, that's fine too, just tell me that instead. Your last section should include any questions you have about the course, the year, or me.
So that I can filter into a folder, your subject line should be "Introductory Email".