The way I understand it, ufw is a frontend for iptables. So no.

This is a helpful blogpost on disabling input devices in Wayland

You don’t. Even if you’re happy to support the developers of the software you use (which is great!), I think it makes more sense to download and give it the spin first, then donate later.

Where indexing and searching mails is concerned, notmuch is the best I’ve seen. Do note that this is not an e-mail client, it only indexes, tags and searches (following the “UNIX philosophy” of doing one job well).

I personally use it with neomutt as a mail user agent, which is almost certainly not what you want. Notmuch supports other clients but they’re all pretty arcane.

So this is not a recommendation, just a glimpse into advanced e-mail setups I guess.

Nice, I didn’t know about the all selector

No need for external programs:

for_window [class="^.*"] inhibit_idle fullscreen
for_window [app_id="^.*"] inhibit_idle fullscreen