We are always open to ways we can better our user's experience. So this feedback on a delete button like you mentioned has been submitted to our Product Team. There are different ways to delete contacts from your account. You are correct, the options previously shared in this thread is for bounces and unsubscribes. However if you are looking to delete any account, you can delete one or more contacts under the Contacts section of your account.
This can be done by searching and selecting your contact. Once you have selected this contact you click More Actions and Delete in the drop-down menu.
I hope these directions help!
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