Send notifications like a pro with Novu

In this article I will explain how Novu can make it easy for you to send notifications / messages through different channel using a single api.

Problem Overview 🤔

Let's take an example of an e-commerce application like Amazon. As a developer if we have to build amazon kind of application, we will need to send different messages to our customer through different channels. Some scenarios can be:-

Verification of user's email id during sign up [ Using Sendgrid / Sendinblue / SES ]
Verification of user's phone number [ Using Twilio / SNS ]
Sending reminder email for abandoned cart items.
Sending product recommendation notification via In-app / email / push
Purchase confirmation message through email / text
Delivery status update message through email / text / whatsapp

So overall, there are multiple channels in which a user can receive notification. In beginning there will be few channels and few services, but as our application grows, number of channels will increase and it will become difficult for a developer to manage all of this.

How Novu solves this problem? 🚀

Novu supports a lot of providers for different communication channels. We can store provider's credentials. At a time one provider can be active per channel. We can then create notification template with a workflow having channels as steps and then can use that template unique identifier with Novu SDK to trigger this notification to our subscriber.

Let's See Novu in action ⚡️

Visit Novu Managed SaaS Application and create a new account and new organisation.

Lets first create a new template by entering basic details
Now edit the template workflow
For simplicity, I will add these two steps in-app and email [ don't forget to add email provider credentials first, until then this step will be disabled ]
Edit the content of in-app step Bonus:- Scroll down, there is feed option also, we can add feeds.
Edit the content of email step. Email step supports variable that we can pass as payload in trigger.
We can edit subscriber preference also for a template. As of now, I have enabled all the steps

Click on the Update button after these steps.

Add SendGrid credentials for email
1. Go to SendGrid and create a new account if you don't have one. Click on the Sender Authentication option in left panel Settings and verify sender information by clicking on Verify a Single Sender button
2. After step 1, Now click on the API Keys option in Settings and then click on the Create API key button on top right side.
3. Now give this key some name, I am giving this Novu name and choose Full Access permission option. Copy the generated API Key
4. Now go back to Integrations section on Novu. In integrations section there are lot of providers for each channels. This section helps us to store provider credentials. Choose SendGrid in email channel.
5. Paste the earlier copied API key in first field and enter the same email id in second field that you verified in step 1. Don't forget to fill the sender name in the third field.

Click on the update button. Now SendGrid integration is ready to use.

Using Novu SDK 🧑🏼‍💻

Install the Novu npm package using this command
```
npm install @novu/node
```
Copy your API key from settings by visiting Api keys option

Initialize Novu in your project

import { Novu } from '@novu/node';
const novu = new Novu(process.env.NOVU_API_KEY);

Create a new subscriber, here user.id is unique id of your user in your system, this id will be saved as subscriberId in Novu.

await novu.subscribers.identify(user.id, {
    email: user.email,
    firstName: user.firstName,
    lastName: user.lastName,
    phone: user.phone,
    avatar: user.profile_avatar,
});

Trigger the notification to newly created subscriber using notification identifier
```
await novu.trigger('first-notification', {
  to: "subscriberId"
  payload: {
    userName: "username01"
  },
});
```
Here payload contains custom variable values. Do you remember we used a custom variable {{userName}} in email content

After execution of above command, newly added subscriber will receive a notification in InApp notification center and also an email

Novu features worth checking out 🤩

Push Channel
Direct Channel (Slack an Discord)
Digest feature The digest engine collects multiple trigger events and aggregates them into a single message.
User can manage notification preference in notification center
Filters and Delays

It is super easy to manage notifications with Novu ⚡️

Pawan Jain's Blog

Pawan Jain's Blog

Send notifications like a pro with Novu 🚀

Table of contents

Problem Overview 🤔

How Novu solves this problem? 🚀

Let's See Novu in action ⚡️

Using Novu SDK 🧑🏼‍💻

Novu features worth checking out 🤩

References:-