---
title: "Send Notifications to Web Apps"
url: https://docs.catalyst.zoho.com/en/sdk/nodejs/v2/cloud-scale/push-notifications/send-notifications/
description: "This page describes the method to send out remote notifications to end-users from your NodeJS application with sample code snippets."
last_updated: 2026-09-08T11:07:33Z
service: Cloud Scale
type: general
related_links:
  - name: "Send Notifications - API"
    url: /en/api/code-reference/cloud-scale/push-notifications/web/send-web-push-notifications/#SendWebNotifications
  - name: "Push Notifications"
    url: /en/cloud-scale/help/push-notifications/introduction
---

# Send Push Notifications to Web Apps

> **Note:** This SDK is currently in deprecation. Migrate to [JavaScript SDK](https://docs.catalyst.zoho.com/en/sdk/javascript/v1/cloudscale/push-notifications/send-web-notifications/) now.

Catalyst enables you to send push notifications to **50 users** in a single function call. You can add
the [user IDs](https://docs.catalyst.zoho.com/en/cloud-scale/help/authentication/user-management/users/introduction/) of all users to be notified in an array as shown below. You must then pass the array to the
`sendNotification()` method, along with the message string to include in the notification. This
string can be plain text, HTML, or a JSON object to be parsed.

The `pushNotification` instance used here is the
[component instance](https://docs.catalyst.zoho.com/en/sdk/nodejs/v2/cloud-scale/push-notifications/get-component-instance/).

```javascript
var userList = []; //Include the user IDs of all users
userList.push(1234556789098);
userList.push(6756467677890);
userList.push(3557866876887);
catalystApp.pushNotification().web().sendNotification("Hi there! The task you scheduled has been completed.", userList); 
//Pass the array with the message string
```

You can also send the notifications to users by including their email addresses instead of their User IDs. You must add
the email addresses in an array, and pass it to `sendNotification()` along with the message string
in the same way.

```javascript
var userList = []; //Include the email addresses of the users
userList.push("emma@zylker.com");
userList.push("p.boyle@zylker.com");
userList.push("noel@zylker.com");
catalystApp.pushNotification().web().sendNotification("Hi there! The task you scheduled has been completed.", userList); 
//Pass the array with the message string
```