HTC Nexus 9 delete your Google & Gmail account

OS: Android 5.0 (Lollipop), upgradable to 7.1.1 (Nougat)

CPU: Dual-core 2.3 GHz Denver

Display: 8.9 inches, 257.7 cm²

Remove a Google account on HTC Nexus 9

If you are going to transfer the phone to another member of your family, you need to make sure to remove your Google account from the phone so that the new user does not disrupt your Google services, for example, does not accidentally delete important emails in your mailbox.

What happens after deleting a Google account?
All data and content associated with the account will be erased, including emails, files, calendars, and photos.
You won't be able to use Google services that require you to sign in to your Google account (such as Gmail, Drive, Google Play or Calendar).
You will lose access to subscriptions on Google Play and YouTube, as well as to content purchased through this account (apps, music, games, TV shows).

How do I remove a Google account from my phone?
Go to Settings on your phone.
Select Accounts and backup.
Click Manage Accounts and delete your account.