Thank you for reaching out to us. Once you update the primary email address on file to something other than the email address you want to delete, you will be able to remove that email from your account entirely. The (c) you see next to the email means that email address is currently the contact email address on your account, which is the email we will send any communications regarding your account to. You cannot remove the contact email address, so updating it to a different email will fix that problem you're having. Click here for an article on how to update the contact email address if you're not sure how to do so. I hope this helps you, have a great day!