UnifiedPush is compatible with WebPush: both just involve an HTTP POST to a specific URL. If your application server supports WebPush, it can send encrypted notifications to UnifiedPush servers (that is how we're planning to support Telegram, for example). You can then decrypt these notifications in the app [1]. However, some protocols only send a wake-up ping or random ID in the push notification, Trifa and Matrix respectively. There, encryption is unnecessary complexity.
However, we don't use the WebPush API between the push server and distributor since there is a lot of scope for innovation in that space (for example Google's FCM uses a custom XMPP based protocol).
However, we don't use the WebPush API between the push server and distributor since there is a lot of scope for innovation in that space (for example Google's FCM uses a custom XMPP based protocol).
[1] One example, https://github.com/UnifiedPush/dart-webpush-encryption