I am a ASP novice and am troubleshooting a form for work. None of us here are ASP experts as we use PHP. But I am on the bottom of PHP experience as well, mostly working wit
If you're using 2-step verification, don't forget to generate an application specific password and use that, not the password you use to log on to Gmail.
(Sorry I can't add this as a comment. Not enough rep at the time of posting this.)