Selfhosted

I feel like I'll eventually have to... mailbox.org upped their prices from 1 EUR/mo to... whatever they are right now, and on top of that I'll still need a VPN to access heinous sites such as pastebin (welcome to Turkey), which is another 5 EUR/mo.

For that money I could get an alright enough VPS from Hetzner and spend some time getting everything configured properly, and have bonus flexibility in terms of hosting anything else I might want to host.

The problem with this ofc is that no "turnkey" mail bundle seems to give a shit about resource usage as far as I'm aware, and I'm worried they'll end up hogging all the server resources for themselves.

I do. Run about a half dozen email servers for various organizations. Been doing it for almost a decade for some. Other than initial setup pain, I've had zero problems others describe. I have used (and still run) docker-mailserver, mailcow, mail-in-a-box and mailu. All are lovely in their own way and fit various use cases better than others.

Gotta say, I’m really happy to see so many people here actually talking about doing it! Usually I see a lot of fear-mongering about self hosting email. You can do it, though, and I think we should encourage more people to do so! It can be a little tricky to set up at first because there’s a lot of different things you need to configure and make talk to each other — I haven’t used them but there’s things like mail-in-a-box that are supposed to make this easier. But the most important thing is to make sure you set up SPF, DMARC, and DKIM DNS records (and set up DKIM signing for your outgoing messages). I’d recommend setting the ruf and rua tags in the DMARC record so you get mailed reports from other mail servers (can help you debug if your mail is getting rejected). I’d also use these tools:

https://www.mail-tester.com/ https://www.learndmarc.com/

Happy mailing :)

Hosting a mail server is really easy. Making sure Hotmail, Gmail and others accept your emails is a nightmare.

I don't host my own email, I just delegate my email management to a small provider.

I host my own mailserver, and to be honest it's pretty painless. Usually I just let it run without giving it any thought. It's on rare occasions that I need to put a bit of work into improving the inbound spam scanning.

Selfhosting does need quite some knowledge of the software stack and several additional protocols to set them up correctly to get your outgoing email delivered. Also, like already mentioned in another comment, you absolutely need an IP address from a non-blacklisted subnet (I think most VPS providers will be okay, residential definitely not).

My software stack: Arch Linux (soon NixOS), Postfix, Dovecot, rspamd, opendkim, opendmarc.

Additional techniques configured: SPF, DKIM, DMARC, DNSSEC.

As you can see it's quite a lot, and I've been doing for more than 20 years now, so my opinion can be a bit skewed. I'd say go for it if selfhosting is a hobby.

Infomaniak has pretty nice free email server options that you can link your domain to. They are a Switzerland based company which is known for having the best privacy laws around.