How Verification Works
Sorzio validates email addresses across DNS MX records, SMTP handshake responses, disposable domain checks, catch-all detection, and syntax validation via No2Bounce ($0.01 per succeeded email, or $0 platform fee on Scale when you bring your own No2Bounce key). Run verification from the Google Sheets sidebar, on a Hosted List, or directly from Claude and ChatGPT MCP using run_verify.
Interpreting Results
Deliverable: the mailbox exists and accepts mail. Catch-all / Risky: the domain accepts mail for all addresses or showed uncertain signals; send selectively and monitor bounce rates. Undeliverable: the mailbox or mail server does not exist; remove these rows immediately (or let a Flow categorical filter stop them automatically before enrichment and AI steps run).
Why Verify Before Sending
High bounce rates damage your sender reputation. Major inbox providers (Gmail, Microsoft 365) throttle or block domains whose bounce rate exceeds 2 to 3%. Placing Email Verification as Stage 1 of your Outbound Flow protects your domain and avoids paying to enrich or write copy for dead addresses.