Switch emails with an email that is already registered? I would like to delete the previous account.

I did not originally get the email to register my Shopify Account. Instead I used said email which is arjun@onwardreserve.com to create an account. It turns out that I created one totally separate. My employer used my personal email to get me into the account. Is there a way we can delete my original account and use that email for my new account? I would basically like to switch ownership of thearjunray@gmail.com to arjun@onwardreserve.com. If that is possible, that is great, otherwise I would like to know how I can solve this problem.

Gratefully,

Arjun Ray