Hackerone is not properly deleting user id

**Summary:** Long ago, i had an account on hackerone that is now deleted. I used the alias email provided by h1 to sigbup on a site for bug testing. To my surprise, i receive an email to my account routed from an alias email that should not exist. **Description:** ### Steps To Reproduce 1. SignUp on H1 2. Use h1 alias email to signup on some website 3. Delete h1 account and the email still exists ### Optional: Your Environment (Browser version, Device, etc) * ### Optional: Supporting Material/References (Screenshots) * as you can see.the email i just received. You can check your database that **█████** dont exist in your database coz I deleted the account long back..but you can see the email address . ███████ ## Impact Privacy concern