Cloudflare has a catch-all option that you can enable, but they only allow you to receive emails not send them. https://developers.cloudflare.com/email-routing/setup/email-routing-addresses/

[email protected]

Please help us grow this community if you’re interested in skincare! We have a big passion for it and also think it would help diversify the type of communities that exist here on Lemmy 😊

You can self host Libreddit. Works great that way.