We don't recommend using a personal email in case of a compromise. It doesn't have to be an .edu or .gov address, although that is preferred if you have that option. Some people have set up a personal email account that they only use for the Learning Portal.
When you use a non-government email address such as: gmail, yahoo, outlook, etc., your account request will take 1-2 business days from the time that you confirm your email address.