Email and phone validation data

Email and phone validation data tells you whether a contact point works before you use it. Marketers, sales teams, sign-up flows and fraud teams use it to cut bounces, protect sender reputation, clean CRM records and block fake registrations.

Typical fields:

• Email address or phone number checked
• Status: valid, invalid, risky, unknown or catch-all
• Reason codes: syntax error, no mailbox, disposable domain, role account
• Domain and mail server details
• Phone line type (mobile, landline, VoIP), carrier and country
• Last verified timestamp

Sources and collection

Email checks combine syntax validation, domain and mail server lookups, and protocol-level mailbox checks that stop before a message is sent. Catch-all domains accept every address, so individual mailboxes on them cannot be confirmed this way. Disposable-domain and spam-trap detection relies on curated lists. Phone validation uses numbering plan data and carrier lookups, which can show whether a number is assigned and what type of line it is.

Delivery and pricing

Sold mainly as real-time APIs and bulk list cleaning. Pricing is usually per check, with volume tiers and prepaid credits, or a monthly API allowance. Carrier and line-status lookups for phones generally cost more than format checks.

Before you buy

• Test on a list with known outcomes and compare unknown and catch-all rates.
• Check API latency if you validate at sign-up.
• Ask how long results are cached and how stale verifications are handled.
• Confirm uploaded lists are deleted after processing and never reused.
• Review coverage of the countries and carriers you need.