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# Email data append: add an email address to a name and postal address

Email Data Append takes a person's name and postal address and returns the email address on record for them. Use it when your list has offline contact details but no way to email anyone on it.

## What it tells you

- Whether the person you described was matched to a record.
- The email address tied to that name and postal address.
- A clear no-match answer when nothing lines up, rather than a silent blank.
- The credits used on the call and your remaining balance.

## What you need to provide

All five of these, sent inside the `input` object:

- First name of the contact.
- Last name of the contact.
- Street address.
- City.
- ZIP code.

## What it costs

10 credits per lookup. Live per-product costs are shown on the Billing page in your dashboard.

## How to run it

- In the dashboard: Email Data Append
- From your code: POST /v1/email-append, then see the Developer Hub at app.1lookup.io/developer-hub.

## Good to know

- Results are point-in-time. People move and change email addresses, so a match reflects the record as it stood when you ran the lookup.
- Every one of the five inputs is required, so a row missing a ZIP code or a street address cannot be run as is. Fill the gap or leave that row out.
- Not every name and address has an email on record. A no-match is a normal outcome, not an error.
- If you have the email address and want the person behind it, use Reverse Email Lookup instead.
- Names, postal addresses and email addresses are personal data. Use them for legitimate business purposes only.