Haven’t seen anyone mention https://overthewire.org/wargames/bandit/ yet. It’s a Linux shell game where you need to solve problems using shell commands that only requires an ssh client on your machine: you ssh into the first server, solve a problem, and the solution points you to the next server. It starts easy (e.g. read out this file using cat
) but gets hard quickly. But you can always look up solutions when you’re stuck. It gives a good idea what certain commands are used for and how they can be combined in powerful ways.
I’m using Infomaniak Mail and am fairly happy so far. They are based in Switzerland and I get custom domain + 5 user accounts for 1.50 EUR/month. I’ve tried other providers but coming from Gmail I like that their webmail displays email conversation like Google does whereas most other providers just run rainloop or roundcube where threading support isn’t quite the same.
Their android app is open source too and can be installed from fdroid. It can be a bit sluggish sometimes though, but K9mail/Thunderbird works fine too.