curl --request POST \
  --url https://app.papelship.com/api/v1/blacklist/emails \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-store-hash: <api-key>' \
  --data '
{
  "email": "fraud@example.com"
}
'

const options = {
  method: 'POST',
  headers: {
    'x-api-key': '<api-key>',
    'x-store-hash': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({email: 'fraud@example.com'})
};

fetch('https://app.papelship.com/api/v1/blacklist/emails', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.papelship.com/api/v1/blacklist/emails"

payload = { "email": "fraud@example.com" }
headers = {
    "x-api-key": "<api-key>",
    "x-store-hash": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://app.papelship.com/api/v1/blacklist/emails",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'email' => 'fraud@example.com'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>",
    "x-store-hash: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://app.papelship.com/api/v1/blacklist/emails"

	payload := strings.NewReader("{\n  \"email\": \"fraud@example.com\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("x-store-hash", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "success": true,
  "blocked_email": {
    "id": 123,
    "object": "blocked_email",
    "email": "fraud@example.com",
    "reason": "<string>",
    "created_at": "2026-10-04T12:00:00.000Z"
  }
}

{
  "success": false,
  "code": "INVALID_API_KEY",
  "error": "Invalid API Key",
  "request_id": "req_7YbK2mQ9xP1cRt4v"
}

{
  "success": false,
  "code": "INSUFFICIENT_SCOPE",
  "error": "This API key needs the orders:write permission",
  "request_id": "req_7YbK2mQ9xP1cRt4v"
}

{
  "success": false,
  "code": "INVOICE_PAID",
  "error": "A paid order cannot be cancelled. Refund it instead.",
  "request_id": "req_7YbK2mQ9xP1cRt4v"
}

{
  "success": false,
  "code": "VALIDATION_FAILED",
  "error": "customer_email must be a valid email address",
  "request_id": "req_7YbK2mQ9xP1cRt4v"
}

{
  "success": false,
  "code": "RATE_LIMITED",
  "error": "Too many requests. The limit is 300 requests per minute per key.",
  "request_id": "req_7YbK2mQ9xP1cRt4v"
}