Customize email verification

You can add any logic on the process to send email verification in app/Http/Controllers/JsonApiAuth/EmailVerificationNotificationController.

Customize notification

The package use a custom notification in app/Notifications/JsonApiAuth/VerifyEmailNotification,

It extends from Illuminate\Auth\Notifications\VerifyEmail so you can override any method or add your own custom mailable template, in the custom notification.