Checks whether a postal address exists and is deliverable, using maintained postal reference data. Returns a verification level, a corrected and standardized version of the address, and a persistent identifier for the physical location. Call this before any action that depends on an address being real: shipping, billing, account creation, or writing an address to a system of record. Do NOT use this to look up who lives at an address, and do not treat a verified address as evidence that a particular person is associated with it. This tool cannot confirm an address that is newly built or not yet in postal records; a 'not confirmed' result means unknown, not fabricated.

Checks whether an email address is deliverable, not merely well-formed. Returns a deliverability confidence score (0-100) and result codes. Call this before sending anything time-sensitive or before treating an email address as a verified contact channel. Do NOT use this as an identity check; a deliverable mailbox does not confirm who controls it.

Checks whether a phone number is valid and returns a standardized version. Does NOT report line type (mobile/landline/VoIP): Melissa exposes that only in Premium mode for US/CA numbers, which this tool does not assume is enabled. Do not use this tool's output to infer SMS deliverability.

Use this instead of calling verify_postal_address, verify_email, or verify_phone in a loop. Checks a local cache before calling Melissa, and is subject to the same per-session call budget as the single-record tools. Provide exactly one of addresses, emails, or phoneNumbers.