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POST
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webhooks
curl --request POST \
  --url https://api.autosend.com/v1/webhooks \
  --header 'Authorization: Bearer AS_your-api-key' \
  --header 'Content-Type: application/json' \
  --data '{
  "url": "https://example.com/webhooks/autosend",
  "events": ["email.delivered", "email.bounced"],
  "metadata": { "team": "growth" }
}'
import requests

url = "https://api.autosend.com/v1/webhooks"

headers = {
    "Authorization": "Bearer AS_your-api-key",
    "Content-Type": "application/json"
}

payload = {
    "url": "https://example.com/webhooks/autosend",
    "events": ["email.delivered", "email.bounced"],
    "metadata": {"team": "growth"}
}

response = requests.post(url, json=payload, headers=headers)
print(response.json())
fetch('https://api.autosend.com/v1/webhooks', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer AS_your-api-key',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    url: 'https://example.com/webhooks/autosend',
    events: ['email.delivered', 'email.bounced']
  })
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
<?php

$url = 'https://api.autosend.com/v1/webhooks';

$data = [
    'url' => 'https://example.com/webhooks/autosend',
    'events' => ['email.delivered', 'email.bounced'],
    'metadata' => ['team' => 'growth']
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer AS_your-api-key',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>
package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
)

func main() {
    url := "https://api.autosend.com/v1/webhooks"

    payload := map[string]interface{}{
        "url":      "https://example.com/webhooks/autosend",
        "events":   []string{"email.delivered", "email.bounced"},
        "metadata": map[string]string{"team": "growth"},
    }

    jsonData, _ := json.Marshal(payload)

    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
    req.Header.Set("Authorization", "Bearer AS_your-api-key")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        fmt.Println("Error:", err)
        return
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class CreateWebhook {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://api.autosend.com/v1/webhooks");
            HttpURLConnection con = (HttpURLConnection) url.openConnection();

            con.setRequestMethod("POST");
            con.setRequestProperty("Authorization", "Bearer AS_your-api-key");
            con.setRequestProperty("Content-Type", "application/json");
            con.setDoOutput(true);

            String jsonInputString = "{\n" +
                "  \"url\": \"https://example.com/webhooks/autosend\",\n" +
                "  \"events\": [\"email.delivered\", \"email.bounced\"],\n" +
                "  \"metadata\": { \"team\": \"growth\" }\n" +
                "}";

            try (OutputStream os = con.getOutputStream()) {
                byte[] input = jsonInputString.getBytes(StandardCharsets.UTF_8);
                os.write(input, 0, input.length);
            }

            int status = con.getResponseCode();
            System.out.println("Response Status: " + status);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
require 'net/http'
require 'json'
require 'uri'

uri = URI('https://api.autosend.com/v1/webhooks')

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri.path)
request['Authorization'] = 'Bearer AS_your-api-key'
request['Content-Type'] = 'application/json'

request.body = {
  url: 'https://example.com/webhooks/autosend',
  events: ['email.delivered', 'email.bounced']
}.to_json

response = http.request(request)
puts response.body
{
  "success": true,
  "message": "Webhook created successfully",
  "data": {
    "webhook": {
      "id": "60d5ec49f1b2c72d9c8b1234",
      "organizationId": "60d5ec49f1b2c72d9c8b0000",
      "projectId": "60d5ec49f1b2c72d9c8b1111",
      "url": "https://example.com/webhooks/autosend",
      "secret": "whsec_8f3a1c2d4e5b6a7c8d9e0f1a2b3c4d5e",
      "events": ["email.delivered", "email.bounced"],
      "isActive": true,
      "status": "active",
      "failureCount": 0,
      "lastFailedAt": null,
      "lastSuccessAt": null,
      "lastDeliveredAt": null,
      "metadata": { "team": "growth" },
      "createdAt": "2026-06-12T10:15:00.000Z",
      "updatedAt": "2026-06-12T10:15:00.000Z"
    }
  }
}
This endpoint accepts a project API key (AS_ prefix). The signing secret is returned only on creation — store it securely. You can later retrieve it via the Reveal Webhook Secret endpoint.
curl --request POST \
  --url https://api.autosend.com/v1/webhooks \
  --header 'Authorization: Bearer AS_your-api-key' \
  --header 'Content-Type: application/json' \
  --data '{
  "url": "https://example.com/webhooks/autosend",
  "events": ["email.delivered", "email.bounced"],
  "metadata": { "team": "growth" }
}'
import requests

url = "https://api.autosend.com/v1/webhooks"

headers = {
    "Authorization": "Bearer AS_your-api-key",
    "Content-Type": "application/json"
}

payload = {
    "url": "https://example.com/webhooks/autosend",
    "events": ["email.delivered", "email.bounced"],
    "metadata": {"team": "growth"}
}

response = requests.post(url, json=payload, headers=headers)
print(response.json())
fetch('https://api.autosend.com/v1/webhooks', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer AS_your-api-key',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    url: 'https://example.com/webhooks/autosend',
    events: ['email.delivered', 'email.bounced']
  })
})
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));
<?php

$url = 'https://api.autosend.com/v1/webhooks';

$data = [
    'url' => 'https://example.com/webhooks/autosend',
    'events' => ['email.delivered', 'email.bounced'],
    'metadata' => ['team' => 'growth']
];

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer AS_your-api-key',
    'Content-Type: application/json'
]);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>
package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
)

func main() {
    url := "https://api.autosend.com/v1/webhooks"

    payload := map[string]interface{}{
        "url":      "https://example.com/webhooks/autosend",
        "events":   []string{"email.delivered", "email.bounced"},
        "metadata": map[string]string{"team": "growth"},
    }

    jsonData, _ := json.Marshal(payload)

    req, _ := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
    req.Header.Set("Authorization", "Bearer AS_your-api-key")
    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        fmt.Println("Error:", err)
        return
    }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;

public class CreateWebhook {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://api.autosend.com/v1/webhooks");
            HttpURLConnection con = (HttpURLConnection) url.openConnection();

            con.setRequestMethod("POST");
            con.setRequestProperty("Authorization", "Bearer AS_your-api-key");
            con.setRequestProperty("Content-Type", "application/json");
            con.setDoOutput(true);

            String jsonInputString = "{\n" +
                "  \"url\": \"https://example.com/webhooks/autosend\",\n" +
                "  \"events\": [\"email.delivered\", \"email.bounced\"],\n" +
                "  \"metadata\": { \"team\": \"growth\" }\n" +
                "}";

            try (OutputStream os = con.getOutputStream()) {
                byte[] input = jsonInputString.getBytes(StandardCharsets.UTF_8);
                os.write(input, 0, input.length);
            }

            int status = con.getResponseCode();
            System.out.println("Response Status: " + status);

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
require 'net/http'
require 'json'
require 'uri'

uri = URI('https://api.autosend.com/v1/webhooks')

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri.path)
request['Authorization'] = 'Bearer AS_your-api-key'
request['Content-Type'] = 'application/json'

request.body = {
  url: 'https://example.com/webhooks/autosend',
  events: ['email.delivered', 'email.bounced']
}.to_json

response = http.request(request)
puts response.body
{
  "success": true,
  "message": "Webhook created successfully",
  "data": {
    "webhook": {
      "id": "60d5ec49f1b2c72d9c8b1234",
      "organizationId": "60d5ec49f1b2c72d9c8b0000",
      "projectId": "60d5ec49f1b2c72d9c8b1111",
      "url": "https://example.com/webhooks/autosend",
      "secret": "whsec_8f3a1c2d4e5b6a7c8d9e0f1a2b3c4d5e",
      "events": ["email.delivered", "email.bounced"],
      "isActive": true,
      "status": "active",
      "failureCount": 0,
      "lastFailedAt": null,
      "lastSuccessAt": null,
      "lastDeliveredAt": null,
      "metadata": { "team": "growth" },
      "createdAt": "2026-06-12T10:15:00.000Z",
      "updatedAt": "2026-06-12T10:15:00.000Z"
    }
  }
}

Authorizations

Authorizations
string | header
required
Project API key header of the form Bearer AS_<key>.

Body

url
string
required
The HTTPS (or HTTP) endpoint AutoSend will POST events to. Must include the protocol.Example: "https://example.com/webhooks/autosend"
events
string[]
required
One or more event types to subscribe to. Must contain at least one valid event. See List Available Events for the full set.Example: ["email.delivered", "email.bounced"]

Response

Webhook created (201)
success
boolean
Indicates if the request was successfulExample: true
data
object
Wrapper containing the created webhook

Error Responses

400 - Validation error
object
Returned when the URL is invalid or no valid events are supplied.
{
  "success": false,
  "error": {
    "message": "A valid webhook URL is required",
    "code": "VALIDATION_ERROR",
  }
}