Everything is said in the object.
Hi @DanyA1
I think the configuration is done with a special alias.
Go to the mail section of your plan (MX Plan, Email Pro, Exchange or Zimbra) and look for the "Alias" or "Redirections" option, and create an alias with these characteristics:
- Name (left part of @): leave it empty (you could say this is the trick to make it work as a catch‑all).
- Destination: the real email address where you want to receive all messages (e.g.: my‑account@mydomain.com)
Important tip:
The catch‑all will also capture all the spam that bots send to random addresses of your domain. Although OVH’s anti‑spam filter will remain active, a significant amount of unwanted mail will probably end up in your spam folder.
If you prefer not to receive all that spam, consider whether you really need the catch‑all or if it would be better to create specific aliases for the addresses you expect to receive mail from.
If it works for you, let me know. Cheers 
Interesting @sturpin. Thanks
It's not allowed at OVH according to the latest news, so see.
Hello 
The old MX plan used to allow creating a catch‑all but this feature was disabled a long time ago.
Go to the mail section of your plan (MX Plan, Email Pro, Exchange or Zimbra) and look for the “Alias” or “Redirections” option, then create an alias with these characteristics:
- Name (left part of the @): leave it empty (you could say that’s the trick to make it work as a catch‑all).
Unfortunately, it’s not possible; validation of the alias or redirection creation will fail if the field is empty 
Astérix
Wow, I was confused then, thank you so much for the clarification 
Thanks, indeed, as @Asterix writes, you need to put something before the @.
Thanks anyway.
So, since I absolutely need a catch‑all function—or in French, an “attrape‑tout”—which provider could I turn to? (No hosting required).
Visibly some providers are still interested in offering catch‑all addresses.
A quick search brings me results:
https://www.switchweb.co.uk/blog/2025/05/08/email-hosting-with-catch-all/
https://hosting.com/hosting/hosting-by-service/email-hosting/
https://www.hostingadvice.com/hosting-review/hostinger/
https://www.hostingadvice.com/hosting-review/1and1/
etc etc... but this isn’t the right place to advertise competitors, and I have no opinion on these companies.
Otherwise, a VPS where you manage your mail however you want.
Debian + YunoHost if you want to take the step of self‑hosting...
Personally, I can recommend Proton Mail which also offers a Catch‑all system that works well 
Astérix
OK. Thanks for the recommendations.
The OVHCloudSupport service just responded to my ticket from 6 days ago and suggests going to: https://docs.ovhcloud.com/fr/guides/web-cloud/email-and-collaborative-solutions/common-email-features/feature-redirections
Looking through that page, I didn't find anything that answers my question.
Thank you!
Creating aliases and redirects is indeed a good alternative, but it doesn’t cover the catch‑all functionality 100 %, unfortunately.
Astérix
I just realized that Proton Mail is a mailbox whose primary address is the one you set up when registering.
Through this, you indeed retrieve all the emails that arrive in that mailbox.
And the most interesting thing is that if your registration address is toto@proton.me (the domain is necessarily proton.me), all emails of the form toto+xyz@proton.me (xyz being anything—I just tried it twice) end up in the same inbox as toto@proton.me (somewhat like Gmail).
This partly meets my need because I have to log into my Proton Mail profile to retrieve the emails. For it to be perfect I need to modify the addresses already communicated via a system. Which is still possible.
The first one is interesting at £39 per year (but not tried). Thanks!
No need to look so far, at OVH the Zimbra mailboxes adhere to this convention. (destinataire+infosupplementaire@example.com)
No need to go to Proton even if they are respectable people.
There’s what you need at OVH if user+text@example.com suits you
Ah, thanks a lot, I didn’t know that. That’s great.
I’m going to do some tests.
Not with the old MX Plan/Roundcube, but with the Zimbra platform.
meh, a bit libertarian on the fringe but yeah.