Sending Deferral Letter and Additional Rec

I got deferred from Penn and I wanted to send a deferral letter and an additional recommendation from a teacher at school. I think I will be uploading the deferral as an update on the Penn Portal, but I was wondering how to send in the recommendation? Should it be mailed or can it just be sent via email to info@admissions.upenn.edu with my applicant ID and full name?

Thank you!