How do you know if you're accepted?

I check the student center on ERNIE and under the tab “Admissions,” it says admitted with a check mark. Does that mean that I am accepted? If not, does the acceptance letter come via email, mail, or…?

Thanks in advance.

My son was accepted about a week ago. Received an 8.5"x11" blue and yellow envelope that said “Congratulations” on the bottom of the front side.

we peaked and saw it online, letter came the following week

Same here. “Admitted” online and then a nice glossy package arrived in the mail.
Congrats.