Email Risk Classification

What makes an email address "toxic" or risky? What are role-based email addresses (e.g., info@, support@)? Why are role-based addresses considered risky? What are disposable email addresses (DEAs)? Why are disposable addresses bad for my list? How can I detect toxic or risky email addresses? What are parked domains? Should I remove risky addresses from my list? What is a “risky” email address? What makes an address “to monitor” instead of “to suppress”? What defines “to keep”? What is an “unknown” result and how should it be handled? What’s the difference between invalid and undeliverable? What is “toxic” or “harmful” classification? How to weigh engagement vs risk in decision logic? What’s the risk of sending to inactive or risky addresses? How to define a suppression policy by risk score? How to handle freemail vs business domains differently? Why are some addresses marked “valid” but still dangerous? What is the difference between shared and personal inboxes? How do you detect freemail domains (Gmail, Yahoo, etc.)? Why does freemail status matter for B2B vs B2C lists? What is a disposable email provider? How can disposable email domains be identified? What’s the difference between temporary and permanent disposable domains? What is a mailinator-type inbox? What’s the lifespan of disposable inboxes? How do forwarders and aliases hide disposable patterns?