How long is a piece of string?

Yes.

Xmpp, irc, email and websites are all pretty small in terms of resource usage. Where you’ll have problems are with heavy compute workloads like 3d rendering, AI, 3d gaming (sorry, no crysis), and crypto mining. They all can be done on a rpi but not done well.

Slaps board of Pi this bad boy can fit so much fucking dust in it.

i run homeassistant, pihole, 2 projects of mine using NodeJS, nextcloud, a very simple static website and Nginx for some DNS customization like pointing nc.home to a specific port. My pi is a 4GB one and for now the used RAM is not even 1 GB. I run debian with no graphical interface

It can do at least three calculations per second.

Yes, it’s enough assuming all of that is for small-scale personal use.

Email is going to be an unreliable pain. If you like people receiving your emails, don’t self host email.

You can fit lots of stuff in 4gb of ram. Just pile on services till it starts running low.

I have mine hooked up to my PS2 with a dead disc drive to serve ISOs over the Ethernet port. It hosts a samba share so I can just dump ISOs from any device on LAN.

I love this distro

Since I tried zimaboard I would never go back to RPI, personal preference I know but I love it.

There are a lot of factors that go into whether a big server like Google will accept your email, it’s so much work that it isn’t worth it unless you really have to. Just “self host” on proton mail or something

Almost anything. Mine has 1GB of ram and it can do vpn, nginx proxy and other stuff just fine. Use dietpi.

Sure it can, but it depends on what software you run and how much load you put on those services.

Anything she puts her mind to!

I serve several TB of Video movies, TV and music around the house. Jellyfin rocks.