public function updateVerificationByEmail($email)
    {
        // Retrieve user by e-mail
        $user = $this->authModel->where('email', '=', $email)->first();
        if (empty($user)) {
            return false;
        }

        // Update user with a timestamp of when he/her was verified
        return (bool) $user->fill([
            'is_verified' => 1,
            'verified_at' => Carbon::now(),
        ])->save();
    }