Is it anything like multi-threaded xz – in that you’re trading encoding speed for size?

It creates a cost for spammers. They have to have an account with a Telco, which isn’t free, which in a lot of countries comes with some sort of National ID to register. That’s the reason.

I pay $6USD/month for a cloud box that’s encrypted and has been running for years, no outages, no downtime.

For a large organization? Sure. For your family and friends? No.

There are lots of tutorials, and choosing a security-first OS is also wise… OpenBSD is my current favourite.

Honestly, building a mail server isn’t that hard if you aren’t afraid of the command line.

And when making hundreds of billions of dollars off of the ‘woke’ crowd that subscribes to the ‘building a better tomorrow’ ideal, turning into an ignorant and unrepentant fascist piece of shit is a good way to erode market share for free, if you exclude the $46 Billion USD social media site purchase, which is now worth essentially nothing.