A couple of months ago, Google decided that when you email a gmail.com account, if your domain wasn't secure/HTTPS, the mail bounced.
FINE! I made all the domains I email from HTTPS. Happy?! NO?? Oh WTF!
Now I have to do one of these 2 things to all the domains & to be honest, I'm dumb:
https://support.google.com/mail/answ...authentication
Has anyone done this? Can anyone explain it to me in English?