even after spending countless hours configuring SMTP, SSL, TLS, SPF, DMARC, DKIM, IP address pools, white/blacklists, etc. there is still a 99% chance secure, a

even after spending countless hours configuring SMTP, SSL, TLS, SPF, DMARC, DKIM, IP address pools, white/blacklists, etc. there is still a 99% chance secure, authorised, authenticated, "signed", sealed email will be delivered to a spam folder so what's the point?