Ethereum Push Notification Service (EPNS) is the world’s first decentralized communication & notification protocol for Web3.
Using the protocol, any smart contract, dApp, or backend service can send on-chain or off-chain notifications tied to the wallet addresses of users in a gasless, multichain, open, and platform-agnostic way.
Being an open communication middleware, notifications can be integrated and shown on any crypto wallet, mobile app, browser extension, or dApps enabling a native communication layer for Web3.0
Quick Guide to Getting Started with EPNS 🛣
- Any user who activates themselves on the protocol to send a notification is called a Channel.
- In other words, a Channel is any service (protocol, dApp, or even web2 service) that wants to send notifications out to web3 usernames (wallet addresses).
- A wallet address can create only one Channel **** on the protocol.
- A channel is free to delegate (or revoke delegates) sending notifications functionality to any other wallet addresses on their behalf.
- Creating a channel requires 50 DAI and Channel info (Channel name, Image, description, CTA) and some ETH too.
- Channels can send notifications to their users(wallet addresses) in a number of ways including:
- Backend SDK (Gasless, Best for automated logic from dApp / Backend)
- ****Showrunners Framework (Scaffold / Gasless, Best for automated logic via scaffold backend)
- Smart contract to Smart contract (requires gas, **** Best for instant on-chain events, piggybacks on an on-chain transaction via Interface ABI call)
- Manually from EPNS dApp (Gasless, Best for manual logic)
- Users can gaslessly opt-in to receive notifications from these Channels. See the entire walkthrough here.
- Opted-in users are called subscribers of the Channels. Subscribers of the Channel receive notifications from those Channels in their Inboxes.
- Non-opted users or non-subscribers of the Channel aren't alerted when they receive a notif from a non-subscribed channel, instead, it lands in their spam folder.
🖥 Lear️n everything about channels, their working mechanisms, and how to create one.
🔔 Explore all about notifications, their types, the different ways of sending and receiving notifications as well as other imperative details.
- Web3 Notificatins
- Different ways of Sending Notifications
- Receiving Notifications
- Notification Standards
⚙ Understand the key features of EPNS SDK and how to use it in your own project easily.