Add your email for extra security 
Let’s make your account even more secure. Add and verify your email address to easily and safely log back in if you’re ever locked out.
Head to Settings, tap Account, and choose Email address.
Adding an email address to your WhatsApp account is not a standard security feature for general use. Instead, it’s used for two-step verification, an optional security layer that helps protect your account from unauthorized access. If you enable two-step verification, you’ll set a six-digit PIN, and your email can be used to reset it if you forget it.
Here’s why and how to add an email to WhatsApp for extra security:
Why add your email?
