Deleted a email username and want to recreate that same username.

Deleted a email username and want to recreate that same username.

Hello, 

I have deleted the username jpeterson@trailfortwo.com but I would like to recreate that same email. It is not letting me do so because it says it already exists. 

I would like this email to become the admin for my email. 

Please help. 

Thank you, 
Jonathan