I am surprised people think deliverability consists of configuring SPF (SPD is Seattle police), DKIM and DMARC. Spammers can do exactly same given low entry bar

I am surprised people think deliverability consists of configuring SPF (SPD is Seattle police), DKIM and DMARC. Spammers can do exactly same given low entry barrier. It's important but have very little connection to deliverability in real world.