Result semantics
Email validation concepts
Canonical definitions of GTMAPIs validation results, backed by the shared validation result contract, with quality signals and recommended actions.
High-value validation
A high-value validation is a usable personal email result for B2B outbound workflows, not just any syntactically valid address.
Valid role-based email
A valid_role_based result means the mailbox can be accepted while still being a low-value team or function address for outbound targeting.
Risky catch-all email
A risky catch-all result means the domain accepts broadly enough that mailbox-level certainty is not available from standard validation alone.
Unknown email validation result
An unknown result preserves validation uncertainty without charging or pretending the mailbox is usable.
Invalid email validation result
An invalid result is a definitive failed validation: the address should be removed from sends and it never consumes credits as a high-value outcome.
Catch-all detection vs recovery
Catch-all detection explains uncertainty. Premium Catch-All Recovery is a separate opt-in workflow that scores what to do next.
Catch-all recovery confidence
Recovery confidence is a routing signal for catch-all results, not a guarantee that a mailbox exists.
Send with caution vs manual review
Send with caution and manual review are workflow recommendations for uncertain records, not validation statuses.