A catch-all address receives every message sent to your domain that has no mailbox or alias of its own. Type anything before the @ and it still arrives. That is wonderful for a week and a nuisance for a year unless you set it up with a little care.
The short answer
Set a catch-all when you want to hand out a different address to every service without creating each one first, or when you are afraid of losing mail sent to a misspelled or retired address. Point it at a real mailbox you check, not at a forwarder, and expect to turn it off or filter it once spam finds it. On Faivelo a catch-all is a setting on the domain that delivers into any mailbox you pick, and it is included on every plan, the free forwarding plan too.
Why people want one
Julia Stein runs a two-person framing studio. Her domain has three real mailboxes: julia@, workshop@ and orders@. Over a year she has also typed studio@, hello@, info@ and julia.stein@ onto forms, because suppliers ask for "the general address" and she guesses. With a catch-all, every one of those lands in orders@ and she never has to remember which ones she invented.
The second use is cleaner. Give each website its own address: bank@, courier@, newsletter-tool@. When spam starts arriving at courier@, you know exactly who leaked or sold the address, and you can block that one name without touching the rest. People who do this for years end up with hundreds of addresses and have never created one by hand.
The third is insurance. When someone leaves and their address is deleted, or an old brand name is retired, the catch-all keeps receiving what would otherwise bounce. That buys time to update the people who still write to the old name.
The spam trade-off, honestly
A catch-all accepts mail for addresses that do not exist, which is exactly what spammers probe for. Dictionary attacks send to admin@, sales@, test@ and a thousand first names at every domain they can find. A domain without a catch-all bounces those at the door; a domain with one accepts the lot and your spam filter has to sort it.
Two things keep this manageable. First, deliver the catch-all into its own mailbox or folder rather than your personal inbox, so the noise stays out of the way until you look. Second, retire names that get burned: once courier@ is on a spam list, create it as a real alias that routes to nowhere, or block it, and the catch-all stops accepting it. On most hosts a specific alias always beats the wildcard, so a blocked name stays blocked.
What you should not do is forward a catch-all out to a third-party inbox such as a personal Gmail. The forwarder re-sends every piece of spam from your domain to Google, and Google notices. Enough of that and your domain's reputation suffers for mail you never wrote.
Into a mailbox, or into a forwarder?
A forwarding catch-all, the kind a registrar or Cloudflare Email Routing offers, takes anything@ and sends it on to an address you already have. It is free and takes a minute. It is also receive-only: when you reply, you reply from the other address, and the person you invented courier@ for now has your personal one. We walk through that problem in Cloudflare Email Routing can't send.
A mailbox catch-all delivers into an inbox that lives on your domain. From there you can reply as the address the message was sent to, which keeps the one-address-per-service idea intact: answer the courier as courier@, and your real name never leaves the building. It also keeps the spam problem on your side of the fence, where a filter and a folder handle it, rather than re-sending it to someone else's servers.
If your host charges per mailbox, the mailbox route costs a seat. On a flat-rate host it costs nothing extra, which is why we suggest creating a dedicated mailbox called catchall@ or inbox@ for it rather than mixing it into a person's mail.
The catch-all is not the address you give people. It is the net under all the addresses you forgot you gave them.
How to set it up
On Faivelo, open the domain, choose Catch-all, and pick the mailbox that should receive unmatched mail. That is the whole setting. Any address with its own mailbox or alias keeps going where it already goes; everything else lands in the one you chose. You can change the target or switch it off at any time, and aliases you create later take precedence automatically.
Elsewhere the setting goes by "catch-all", "wildcard", "default address" or "unmatched recipients". It is nearly always on the domain rather than on a mailbox, and it nearly always needs an existing mailbox as the target. If your host only offers a forwarding target, you have a forwarder, not a mailbox catch-all, and the reply problem above applies.
One check after you switch it on: send a message from an outside account to a name you have never created, and make sure it arrives where you expected. Then send one to a real mailbox and confirm it still goes there. If both pass, the net is in place.
FAQs
Does a catch-all slow down or affect my normal addresses?
No. Mail to a real mailbox or alias is delivered there as before. The catch-all only takes what would otherwise have no home.
Will a catch-all get me more spam?
Yes, some. Your domain now accepts mail to names that do not exist, which spammers test for. Deliver it into its own mailbox and block names that get burned, and it stays manageable.
Can I reply from an address the catch-all received?
If the catch-all delivers into a mailbox on the domain, yes: reply as the address the message was sent to. If it forwards out to another provider, you reply from that provider's address instead.
Is a catch-all the same as a plus address or an alias?
An alias is one name you create that points somewhere. A plus address is a suffix on an existing name, like julia+shop@. A catch-all covers every name you have not created, so it needs no setup per address.
Does Faivelo charge for a catch-all?
No. It is a domain setting on every plan, including the free forwarding plan, and on paid plans it can deliver into any of your unlimited mailboxes.
Put the net under your domain
Add your domain, create the mailboxes you know you need, and turn on the catch-all for the ones you do not yet. One flat $6 a month for all of it, fourteen days free, no card.