This guide explains how to create a "catchall" email address on an Email Service.

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Introduction

• A "catchall" email address collects all emails sent to email addresses that do not exist on the domain.
  • This is ideal if you want to receive all messages for which no specific address exists on your domain.
  • This type of address cannot be used to send emails.
• If you configure the “Auto-reply” (out-of-office message) function on a catchall@ address, no auto-reply will be sent to senders who contacted a non-existent address on your domain.
  • This restriction prevents reply loops and the sending of unwanted messages.
• Also, please read the important recommendations at the end of this guide.

Create a catch-all address

Prerequisites

• Have a Mail Service on your Infomaniak Manager.
• Have a available address quota or adjust it beforehand if necessary.

Next, the administrator of a Mail Service creates a new generic email address:

1. Click here to access the management of your product on the Infomaniak Manager (need help?).
2. Click directly on the name assigned to the product in question.
3. Click on the chevron ‍ to the right of the blue Create a mail address button.
4. Click on Create a generic email address:
   
5. Choose Catchall.
6. Click on Continue:
   

Once the catchall address is created, it is automatically visible in your Infomaniak Mail web app.

To use it elsewhere, you need to add a password for your devices/users.

Example of use

Once the catchall address has been created:

1. You use the email address jonnie.smith@domain.xyz, which works and exists on the domain.xyz Mail Service.
   • You have also created an address catchall@domain.xyz on the domain.xyz Mail Service.
2. An email is sent to smith.johnny@domain.xyzbecause the sender misspelled the recipient's address..
3. The email will still arrive in the catchall@domain.xyz inbox, which you can simply check in your preferred Mail interface.
4. The same applies if you delete the jonnie.smith@domain.xyz address at some point; if you keep the catchall address, then it will receive everything that is still addressed to the non-existent address...

Important recommendations

Creating this type of account is not recommended:

• Catch-all addresses receive all emails sent to any domain address; this means they are often flooded with spam, which can be difficult to manage and filter.
• Due to the high volume of spam, legitimate messages can be lost and buried in the mass, which can lead to the loss of important communications.
• Catchall addresses can potentially be used by attackers to target your domain with brute-force attacks or other methods, as they offer an easy target for testing different address combinations.