Product
Email append API
Take a name + address or phone and get back a verified personal or work email — through one REST endpoint, $0.05 per match.
Email appending is the original use case for identity-graph APIs and it's still the highest-leverage one. You have a customer file with names and mailing addresses but no emails. Or you have a phone-only list from a call center and you want to start an email channel. Or you have a CRM full of stale work emails and you need to refresh them to current personal addresses. That's all email append.
How email append works
You submit identifying input — name + postal address, name + phone, or name + a known prior email — and we run it against our identity graph to find currently associated email addresses. The returned emails come with a confidence score and a deliverability hint where available.
Like the rest of our API, you only pay when we return at least one new email. If we have nothing, you pay nothing.
What you get back
- Up to 3 personal email addresses ranked by recency
- Up to 2 work email addresses (where available)
- Confidence score (0–100) per email
- Deliverability hint (good / risky / unknown)
- Last-seen-active date when available
Common workflows
Postal-to-email conversion. Direct mail file → email channel for cheaper second touches.
Phone-to-email enrichment. Cold call list → drop-in email follow-up.
CRM refresh. Old contacts with bouncing emails → re-append to find current addresses.
Identity verification. Match a user-provided email against the identity graph for soft verification at signup.
Compliance
CAN-SPAM applies to commercial email regardless of where you got the address. You need a clear unsubscribe link and an honest from line. Email append is legal in the U.S. for commercial outreach as long as you honor opt-outs and don't misrepresent. GDPR jurisdictions are stricter and email append is generally not advisable for EU residents without explicit consent.