There already was a post like this this year but now my answer is "a standardized push notification system (most likely federated) that's actually possible to be implemented in a user friendly way". Google doesn't want to encrypt theirs afaik and apparently some people are concerned about the traditional "every app is responsible for its own notifications" approach consuming much more battery, even though I didn't notice it myself (I guess it's possible if you have 50+ apps installed but it's not something that should be a thing in the first place).
Idk about Element but Signal uses the Google's insecure implementation if the device has gapps installed and it uses the traditional system which is not push if gapps are not installed.
There already was a post like this this year but now my answer is "a standardized push notification system (most likely federated) that's actually possible to be implemented in a user friendly way". Google doesn't want to encrypt theirs afaik and apparently some people are concerned about the traditional "every app is responsible for its own notifications" approach consuming much more battery, even though I didn't notice it myself (I guess it's possible if you have 50+ apps installed but it's not something that should be a thing in the first place).
This ready exists. I forget what it's called.
https://unifiedpush.org/
I know about that but afaik almost nobody uses it. The only app I know that supports it is Mercurygram which is a Telegram client.
How does Element and Signal implement push notifications?
Idk about Element but Signal uses the Google's insecure implementation if the device has gapps installed and it uses the traditional system which is not push if gapps are not installed.
Ah okay, thanks for the insight. I don't have Gapps (MicroG or otherwise), so I do wonder how these services deliver their notifications.
If it's not using GCM then it must be long polling, unless signal servers are set up to use a 3rd form of push (APNS for iOS, GCM for Android)
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Unified Push?