I have two Gmail accounts and I want to delete one entirely. How do I do so?
Sign in to the account you want to delete.
Go to MyAccount.Google.com.
Click on "Delete your account or services" under Account Preferences.
Click "Delete Google Account and data". Confirm it's your account. Follow the rest of the process.
Your account will be inaccessible, and the data will be permanently gone in a few weeks.