Gmail recently decided to start flagging just about all of my @custom-domain emails that I have set to forward to it as spam. No amount of marking 'not spam' ha

Gmail recently decided to start flagging just about all of my @custom-domain emails that I have set to forward to it as spam. No amount of marking 'not spam' has made it stop. Fortunately, a filter to make sure they don't go to spam works. And almost all of the actual spam is to the raw gmail address, not the unique custom emails I give out when businesses or new website signups insist on one.