Technology

OP: Asks about spam filtering

Lemmy: Recommends everything but spam filtering

Protonmail with https://simplelogin.io aliases. If your email has spam, get a new email. But proton already has good spam filtering. Aliasing helps make your emails less identifiable to your identity.

Anonaddy

Use unique bullshit addresses for every site, that way WHEN they sell your data out or get hacked you know who is responsible.

Anonaddy forwards everything to your one true email address knowing that only anonaddy really knows your address.

spams

Mass nouns don't need the 's'

I created an email provider called Port87 that specializes in spam prevention, phishing prevention, and organization.

You use it by giving a labeled address to all your accounts, so to Netflix, you would give something like [email protected]. Then that becomes a label in your account that you can set quick settings for like mark as read or even just block that address if you’re done with it. And if you get something claiming to be from your bank there, you know it’s phishing.

Then you can have labels that are meant for real people like [email protected], and when someone emails them for the first time it will email them back and ask them to verify they’re human.

And your bare address ([email protected]) doesn’t go through, but rather responds with a list of your “public label” addresses. So that one you can share all over the internet and you won’t get spammed.

Addy and Firefox Relay

I know it's "big evil corporate overlord", but Gmail is pretty damned good at it, really.

If I get spam from a company I recognize I gave my email to, I'll go in it and click the unsubscribe button and do it that way. Anyone else and I just mark it as spam and Gmail does a pretty good job of sending swaths of junk emails into the spam folder. I don't get much that slips through. Very occasionally I'll sign up for something I'm supposed to get an email for but don't, and I'll find it in the spam folder. If I think I'll want more emails from that company, I move it to my regular folder.

You can look for a service that provides a mail security gateway, or host your own. My personal solution is mimedefang milter on sendmail which will blow away any canned solution you will find. But you have to know what you are doing with it.

There is barracuda, but they are $$. Another option is proxmox mail gateway. Not as fast as mimedefang, but it has a nice gui.

https://www.proxmox.com/en/proxmox-mail-gateway/overview

Tildes/pubnixes since nobody knows about them not even the spammers. sdf.org is the oldest pubnix but I prefer tilde.team

The paid proton accounts let you use several custom domains, although I'm not sure if you can combine custom domains with email aliases. For random sites the email alias with the stand @proton.me would probably suit your needs.

After about 3 years of use I've been very happy with proton's spam filtering.

I self-host my own mail server but for anything else I use my anonymous @duck.com email address.

I want to use my main mail address everywhere, even public places.

No you don’t. It’s not quite as simple, but buy your own domain, get an email provider such as Fastmail that will let you use a catch-all, then use a unique address for every site you visit.

Then if one starts receiving spam, you can block that specific address and voila, no more spam. Plus you know what sites have either poor customer detail hygiene or are actively selling your details.