---
title: "Verify an email address"
method: POST
path: "/v2/contact/email/verify"
tags: ["Contact"]
---

# Verify an email address

`POST /v2/contact/email/verify`

## Request

- Base URL: `https://api.reversecontact.com`
- URL: `https://api.reversecontact.com/v2/contact/email/verify`
- Auth: HTTP bearer

Asynchronously checks whether an email address can receive mail and returns valid, risky, invalid or unknown. The request is acknowledged with data.webhookId and data.pollUrl. Poll GET /v2/webhooks/{webhookId} for the verdict in data.result (ContactEmailVerifyResult), or receive it on the optional webhookUrl callback. Credits: 1 per verdict, whatever it says. A check that fails is refunded.

## Headers

- `Idempotency-Key` string: Optional. A key you choose (1 to 255 printable ASCII characters, a UUID for example) that makes the request safe to retry. For 24 hours, a request with the same key and the same body returns the first response with Idempotent-Replayed: true, without starting another lookup or debiting credits.

## Request body

- ContactEmailVerifyBody
  - `email` string, email, required: Email address to verify
  - `webhookUrl` string, uri: Optional HTTPS URL for the result callback

## Response `200`

Email verification task created

- object
  - `success` true, required
  - `data` ContactEmailVerifyAckData, required: Immediate acknowledgement for the asynchronous Email Verification.
    - `status` string, required: Task acknowledgement status
    - `webhookId` string, required: Unique task id (UUID). Poll GET /v2/webhooks/{webhookId} for the result, or use it to correlate the optional webhook callback.
    - `pollUrl` string, required: Convenience path to the polling endpoint for this task
  - `error` unknown, required
  - `quotas` V2Quotas, required
    - `creditsConsumed` number, required: Credits used for this request after pricing resolution
    - `workspace` object, required
      - `id` string, required: Workspace identifier
      - `credits` V2Credits, required
        - `total` number, required: Total credits in your plan
        - `used` number, required: Credits consumed so far
        - `left` number, required: Remaining credits
      - `hasUnlimitedCredits` boolean, required: Whether workspace credits are unlimited
      - `allowDailyOvercost` boolean, required: Whether the workspace may exceed its daily cap (Enterprise only)
      - `dailyLimit` V2LimitInfo
        - `limit` integer, required: Maximum allowed in the window
        - `used` integer, required: Amount used in the window
        - `left` integer, required: Remaining in the window
        - `nextReset` string, required: When the window resets (ISO 8601)
      - `minuteRateLimit` V2LimitInfo, required
        - `limit` integer, required: Maximum allowed in the window
        - `used` integer, required: Amount used in the window
        - `left` integer, required: Remaining in the window
        - `nextReset` string, required: When the window resets (ISO 8601)
    - `key` object, nullable, required
      - `id` string, required: API key identifier
      - `dailyLimit` V2LimitInfo
        - `limit` integer, required: Maximum allowed in the window
        - `used` integer, required: Amount used in the window
        - `left` integer, required: Remaining in the window
        - `nextReset` string, required: When the window resets (ISO 8601)
      - `minuteRateLimit` V2LimitInfo, required
        - `limit` integer, required: Maximum allowed in the window
        - `used` integer, required: Amount used in the window
        - `left` integer, required: Remaining in the window
        - `nextReset` string, required: When the window resets (ISO 8601)
      - `creditLimits` object, required: Credit limits set on this API key. Each is null when the key has no such limit.
        - `daily` V2KeyCreditLimit, required
          - `limit` number, required: Credits this key may spend in the period
          - `used` number, required: Credits this key spent in the period, this request included
          - `left` number, required: Credits this key may still spend in the period
          - `nextReset` string, nullable, required: When the period resets (ISO 8601): 00:00 UTC for the daily limit, the 1st of next month at 00:00 UTC for the monthly limit, null for the total limit
        - `monthly` V2KeyCreditLimit, required
          - `limit` number, required: Credits this key may spend in the period
          - `used` number, required: Credits this key spent in the period, this request included
          - `left` number, required: Credits this key may still spend in the period
          - `nextReset` string, nullable, required: When the period resets (ISO 8601): 00:00 UTC for the daily limit, the 1st of next month at 00:00 UTC for the monthly limit, null for the total limit
        - `total` V2KeyCreditLimit, required
          - `limit` number, required: Credits this key may spend in the period
          - `used` number, required: Credits this key spent in the period, this request included
          - `left` number, required: Credits this key may still spend in the period
          - `nextReset` string, nullable, required: When the period resets (ISO 8601): 00:00 UTC for the daily limit, the 1st of next month at 00:00 UTC for the monthly limit, null for the total limit
  - `metadata` V2Metadata, required
    - `requestId` string, required: Unique identifier for this request
    - `executionTimeMs` integer, required: Total execution time in milliseconds
    - `updatedAt` string: Last upstream update timestamp (ISO 8601). Present only when available.

## Other responses

- `400`: Invalid JSON body or endpoint-specific business validation, or an Idempotency-Key that is not 1 to 255 printable ASCII characters (INVALID_IDEMPOTENCY_KEY)
- `401`: Missing or invalid API key or OAuth access token
- `402`: No credits left. Purchase more to continue.
- `403`: Forbidden: the API key lacks permission for this endpoint, or reached its total credit limit (KEY_CREDIT_LIMIT_REACHED, no reset: raise or reset the limit)
- `404`: Data not found
- `409`: IDEMPOTENCY_KEY_IN_USE: a request with the same Idempotency-Key is still being processed. Retry after the Retry-After seconds to receive its response.
- `422`: Schema or validation error, unresolved internal id, or disposable email domain, or an Idempotency-Key already used with a different body (IDEMPOTENCY_KEY_REUSED)
- `429`: Rate limit exceeded, or the API key reached its daily or monthly credit limit (KEY_CREDIT_LIMIT_REACHED). Wait error.details.retryAfter seconds, then retry. The response carries no quotas object.
- `451`: Data subject blocked. The profile has been removed per GDPR/CCPA data subject request.

---

[API](https://skmtc.dev/scrapin/apis/reverse-contact-api.md) - [All operations](https://skmtc.dev/scrapin/apis/reverse-contact-api/llms.txt) - [OpenAPI document](https://skmtc.dev/scrapin/apis/reverse-contact-api/revisions/7d02242af2a9?raw)