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It just does. Your phone can check by itself if someone is on signal or not - no upload of contacts needed.

Well, I’d say they can do that as long as it stays on my device like with Signal.

Sticking to Signal is really the best option

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The privacy policy doesn’t matter if no data is saved unencrypted or with no metatdata.

The only thing Signal saves (which is proofed by a law case afaik) is the phone number and the account creation date.

It’s overpriced all the times tho

Not an application

You need an operating system like calyxOS or LineageOS or just a firewall that allows blocking internet access of apps

Cryptomator

I use Google files with disabled Internet permission.

True, no threads. I didn’t notice cause for threads I usually used the website on my laptop

The protonmail app seams good to me on Android?

“no desktop app” One can use the iPad App on Mac with m1, tho sure not optimised for desktop.

“No safari extension” They announce it on their download page, so it should be available later.

You have two ways. Either the person made there public key available or you set a password for your mail that only you and the receipient know (you may want to forward a mail and share the password via Signal).

Yeah I’m also mostly using Signal but at least Proton provides an easy ux/ui to encrypt mails.

How come that the recipients can’t read them?

Well, it’s always a good idea to delete unnecessary mails and junk mails

‘a technology where we can control’…

Oh no, who is “we”?

How’s the interface?

Google developed that!? Or has it been an extension for google mail rather?