If I understand your situation correctly, you don't use "View as a webpage" when you send emails generally? Is there a reason why you are not using it for all emails?
If you're not using it, then it seems as though the way you're doing this currently is the fastest. Your other option would be to use the "View As a Webpage" consistently, add yourself to the mailing list, then take the URL as it's populated for you and resend it.