If all you want is to receive emails and forward them to another email (like Gmail), it’s straightforward and free. If you want to send using your domain, you usually have to pay someone or spend a bunch of time learning how to set up a mail server on your own and how to get your mails out of people’s spam box. Or you have to find an easy-to-use workaround (I know there is one for Gmail but it’s a bit annoying to set up and use)

Here are the steps to setting up a catch-all using Cloudflare:

1. Get a domain (they are actually pretty cheap)
2. Add the domain to Cloudflare. (If you bought the domain from Cloudflare, this is already done. And Cloudflare is among the cheapest places to buy domains so I recommend it.)
3. Open the site in the Cloudflare web dashboard and open the tab called “email”
4. Add a destination email and enable catch-all.