I don't know one, but if you have Apple devices, Hide My Email may be a nice effort-free solution for you:

https://support.apple.com/en-us/HT210425

No one would dare block @icloud.com.

Also have you consider plus addresses or . addresses ("." is preferred if your email provider supports it -- harder to assume that you can just remove the dots for downstream spammers).

[EDIT] Did some quick searching, and the F/OSS community has delivered! There are at least two you could use:

- https://github.com/JoeBiellik/pleasenospam

- https://github.com/haydenwoodhead/burner.kiwi

I run a small digitalocean instance with just postfix running on it that forwards to my real email address at gmail, using aliases. It takes me under 15 seconds to log in, create a new aliases, and run 'newaliases'. This way I can keep aliases around that are important and when they start spamming, just go delete it until I need it again.

If you're considering running postfix, IMO you should consider running maddy/chasquid instead:

https://github.com/foxcpp/maddy

https://blitiri.com.ar/p/chasquid/

They're simpler, and maddy (at least) has an S3 backend now.

Isn't it easier to just catch-all and blacklist the spamming ones?

if you're using google apps (bring on the downvotes, for good reason tbh) then this is just email aliasing / fwding.

Point being that I image many mail providers offer such a thing

Try my project @ https://pretzelbox.cc.

Here's a video demo of the inbox for your domain @ https://www.youtube.com/watch?v=EyBIpO5VkLk

I made one (running on catcher.mx.ax) available here https://github.com/jawr/catcher not much in the way of documentation I’m afraid :(

AnonAddy https://github.com/anonaddy/docker

Alternatively just set up catch-all on your existing email for the domain, no extra apps needed.

MiniMail does feel like this: https://github.com/synox/disposable-mailbox

Personally I just do:

A domain + Cloudflare Email Forwarding (with catch-all)

or

A domain + Catch-all on my GSuite (or Workspace, whatever it's called now...) subscription