public function toMail($notifiable)
{
return (new MailMessage())->subject(trans('laralum.notifications_account_activation_subject', ['title' => Laralum::websiteTitle()]))->line(trans('laralum.notifications_account_activation_msg', ['email' => $this->user->email, 'title' => Laralum::websiteTitle()]))->action(trans('laralum.notifications_account_activation_action'), route('Laralum::activate_account', ['token' => $this->user->activation_key]));
}