My current study permit already expired. I already applied for a study permit extension. My temporary Visa is still valid until 2021. Can I travel home and come back Canada? I believe I need to have a valid study permit to allow to come back Canada. I should be received my study permit extension in September. Can my friend mail the study permit extension to my home country? So I can have it on hand when I am at home, and then allow me to travel back Canada.