---
title: "Batch verifies emails from given input array. Maximum 1000000 emails per call. Maximum 10 running batch verification sessions at a time. Add a webhook url to receive results once completed (optional and recommended)."
method: POST
path: "/batch-verify"
tags: ["batch verify"]
---

# Batch verifies emails from given input array. Maximum 1000000 emails per call. Maximum 10 running batch verification sessions at a time. Add a webhook url to receive results once completed (optional and recommended).

`POST /batch-verify`

## Request

- Base URL: `https://api.mailfloss.com`
- URL: `https://api.mailfloss.com/batch-verify`
- Auth: API key in query parameter `api_key`

## Query parameters

- `api_key` string, required

## Request body

- object
  - `webhookUrl` string: optional - enter webhook url to post to when job completed
  - `emails` string[], required

## Response `200`

successful operation

- BatchVerify
  - `id` string: The returned job Id

## Other responses

- `400`: No email address supplied
- `401`: Invalid API key
- `402`: Insufficient credits
- `403`: No API key provided
- `413`: Payload too large. Too many emails addresses
- `415`: Invalid Content Type. Must be application/json
- `429`: Rate limit exceeded
- `503`: Failed to create job

---

[API](https://skmtc.dev/mailfloss/apis/mailfloss-api.md) - [All operations](https://skmtc.dev/mailfloss/apis/mailfloss-api/llms.txt) - [OpenAPI document](https://skmtc.dev/mailfloss/apis/mailfloss-api/revisions/b15ef7bc2403?raw)