Unfortunately this email that is sent out is not from a "view", it is a Notification that is built inline actually. This is where it is currently built when needing to be sent off: Illuminate\Auth\Notifications\VerifyEmail@toMail. This particular class has a static callback that can be set to build this email instead of letting it do it.
In a Service Provider in the boot method you will need to assign a callback for this class:
Something "like" this might work:
public function boot()
{
\Illuminate\Auth\Notifications\VerifyEmail::toMailUsing(function ($notifiable) {
// this is what is currently being done
// adjust for your needs
return (new \Illuminate\Notifications\Messages\MailMessage)
->subject(\Lang::getFromJson('Verify Email Address'))
->line(\Lang::getFromJson('Please click the button below to verify your email address.'))
->action(
\Lang::getFromJson('Verify Email Address'),
$this->verificationUrl($notifiable)
)
->line(\Lang::getFromJson('If you did not create an account, no further action is required.'));
});
}
As this is a notification you should have more options on customizing it.
If you want to use your own Notification class you can override the sendEmailVerificationNotification method on the User (Authenticatable) model (this is from the MustVerifyEmail trait).
Second Question:
The VerificationController (App\Http\Controllers\Auth\VerificationController) that you should have has a method named resend (from the trait VerifiesEmails) that looks like a good candidate for this purpose.
You should have routes setup for these verification routes via Auth::routes(['verify' => true]);
Note:
The verification system uses a field on the users table email_verified_at in 5.7 to mark this. You would want to make sure you have this field. When the user changes email address I suppose you could make this null then redirect them to the resend route, to send off the new verification. This will put them into an "unverified" state though until they reverify, if that is what you intend to happen.
Update:
Seems we were going down the right track. I found this SO answer that goes over similar things:
Changing the default “subject” field for the verification email in laravel 5.7