Bot API

They’re working on support for email based accounts rather than just phone numbers. This will likely open up that possibility.

I’m looking forward to it as well as my only Telegram use case is using it as a notification service for my servers. All my chats are transitioned to Signal.

my encrypted chats saved across multiple devices

You get that on Signal. I’ve got it on my phone, laptop, and tablet and I see the chats on all of them.

Do you mean message history when setting up a new device? They are working on that, but it’s not so easy to do without storing all your chats with a server side encryption key. Apparently something coming soon though.

It was just release on iOS, Android has had it for a while

https://support.signal.org/hc/en-us/articles/360007062012-Ne...

On iOS, Signal has implemented a data transfer from one device to another directly. It's of no use if one loses one's device or just hands over the old device to someone else before completing the setup of the new one (people are accustomed to setup a new device from backups in the cloud, which Signal won't support).

"Won't support" is wrong, this is explicitly on the roadmap, they've stated that multiple times. "Doesn't currently support" would be more accurate. For the technical aspects, secure cloud backups are going to be made possible with https://signal.org/blog/secure-value-recovery/.

Wire has E2E synced across devices and platforms, though its client and features lag behind Telegram (it's still better than Signal on features).

Wire sends your social graph to the cloud.

Maybe this is an okay trade-off for you, but Signal's phone number as ID requirement means they can rely on the local contacts kept on your device and keep very little metadata about you on their servers.

For Signal desktop on Linux to not require that I validate my mobile device randomly to read my encrypted messages. If it used GPG then this wouldn't be a problem.

What does this dialog look like? I don’t recall having seen that in my Signal desktop on Linux or Mac.

It looks like a yellow notification that says you need to re-link your mobile device, and in order to do so you have to take a picture of a QR code from your mobile device.