What ideally I’d like is some sort of good encrypted email […], which can achieve decent Android integration. Proton apps are pretty useless to that effect […]

Don’t need provider-specific apps if their services use standard protocols:

• IMAP: Fair Email or K-9 Mail(/Thunderbird)
• CalDAV: DAVx⁵

• For incoming mail, on your server run a mail retrieval agent like fetchmail to fetch mail from the externally hosted mailbox into a maildir on your server.
• To serve that maildir to your clients, on your server run a mail delivery agent like the IMAP server Dovecot.
• To accept outgoing mail from your clients, on your server run something like Postfix with a relayhost configured with the details of your externally hosted SMTP server.

There’s nothing unusual or tricky about any of this arrangement.

https://jaas.8x8.vc/#/pricing

(I have never used their commercial offering).

Jitsi works really well, and the developers seem to have made an effort to have it work well on any platform, even mobile browsers and PSTN. I’ve always found it the lowest friction teleconferencing method for all types of users.

It’s self-hostable, integrates with SIP, and 8x8’s commercial offering mentions HIPAA, BAA and GDPR.

Migadu is a decent option if you don’t want to self-host.

It’s no use. “VPN” means gateway/MITM service, just like “crypto” means digital tulip mania.

Today’s episode brought to you by our friends CoinSkank™ and EchelonVPN.

The article does not explain the primary design purpose of a VPN – providing an encrypted tunnel into or between two private subnets.

For example, your home subnet is typically all 192.168.nnn.nnn addresses – a class of addresses which the wider internet does not route, and which your router/modem does not allow the wider internet to access unless explicitly permitted.

Say you have a NAS on your home network, and you want to access it from your laptop while at a cafe; you could set up a VPN between your laptop and your home router, and it can make your home network appear as your local network to your laptop, giving you access to your NAS.

Or between two office locations of a business – their database servers, accounting systems, printers, etc can all be freely accessible between offices without being exposed to the wider internet.

Yeah, I was doing some more reading and I think it might only be the newest version of the UnifiedPush spec which requires the message to be encrypted.

• https://codeberg.org/UnifiedPush/specifications/pulls/1
• https://github.com/binwiederhier/ntfy-android/pull/98
• https://codeberg.org/iNPUTmice/Conversations/issues/428

I noticed that the examples given on https://codeberg.org/iNPUTmice/up/src/branch/master/README.md are unencrypted.

I mean ntfy’s primary purpose is not dependent on UnifiedPush – all UP functionality could be removed and ntfy would still work as intended.

Ntfy server knows how to be a UP gateway, and relays those messages to the ntfy app, which knows how to be a UP distributor.

As far as I understand it, a client app using UP to recieve push notifications does perform a registration step with the UP gateway (via the distributor app which communicates with the gateway via its own transport), which sets up and responds with the api endpoint details, which the client app relays to its servers, which can then send UP notifications via the specified gateway.

You could have a look at the messages ntfy is passing around using its trace function: https://docs.ntfy.sh/troubleshooting/

It doesn’t matter. Even if the ntfy message was plaintext, that plaintext content would be a UnifiedPush “Push message” which is the RFC8291-encrypted raw POST data.

Not really. “Use” isn’t a well defined word in this context.

The ntfy server/client and the protocol it uses is merely the conduit for the UnifiedPush protocol. Sort of like how tls or ssl are a conduit for http.

In its typical primary use, ntfy is unrelated to UnifiedPush.

Wheat and Flour Testing Methods - A Guide to Understanding Wheat and Flour Quality; Wheat Marketing Center Inc, 2004

Here it’s nutrition information by the gram, serving size by the gram, packaging by the millilitre.
The only way you can compare the relative value of different ice creams is by using the serving size and # servings info from the nutrition panel to calculate the grams per package. (Or even better, comparing g/fat per package because that’s where the value is).

a private DNS server that only has records from your local services would at least prevent apps from reaching out as long as they aren’t smart enough to fall back to an IP address if DNS fails.

Yes, this. It’s important that your local DNS server does not even forward queries from the isolated subnet to external DNS, because these queries (and responses) can contain information. (“DNS tunneling”).

What will this mean for Lemmy instances? XMPP servers? Email servers?

What if a 15 year old runs their own personal Mastodon server? LoL this is gonna be yet another entertaining Australian government shitshow.

I think a lot of comments have missed that ntfy.sh does not use UnifiedPush, the ntfy server is a UnifiedPush provider and the ntfy app is a UnifiedPush distributor.

Regarding encryption of the push message, from https://unifiedpush.org/developers/spec/android/ :

Push message: This is an array of bytes (ByteArray) sent by the application server to the push server. The distributor sends this message to the end user application. It MUST be the raw POST data received by the push server (or the rewrite proxy if present). The message MUST be an encrypted content that follows RFC8291. Its size is between 1 and 4096 bytes (inclusive).