I wrote this because I've been getting an overwhelming amount of third party recruiter spam in my inbox. I tried creating filters in gmail to weed these guys out but it was like playing whack a mole. Many of these guys are using third party mailing services and what is interesting is my email address they are sending to includes two different email addresses i stopped using after a data breech (linkedin and monster). I initially wrote a quick and dirty version of this but discovered I really enjoyed learning apps script/JS. Weirdly my background is infrastructure so my history in code is mostly shell/perl/etc.
I'm grateful for any feedback you guys have on this.