Not every risky email should be blocked outright. Some messages may be legitimate but still deserve extra scrutiny. Until now, email security has largely followed a simple model: a message is either delivered or blocked. While this works well for clearly malicious emails, many modern attacks operate in a gray area where the risk is real, but not high enough to justify rejecting the message.

Phishing attacks, which trick users into revealing sensitive information or installing malware, have grown more sophisticated and localized. Putting it simple: the frauds you'll get in Portugal are completely different from US, Singapore or any other place. 

As the largest players in the email space acknowledge the need for DMARC, the entire ecosystem will become restricted to the ones following the rules.