As the name says, a catch-all address is meant to catch all email sent to any non-existing email accounts on your domain.
It can be useful to catch emails that were mistakenly sent to an address that doesn't exist. For example, if the sender made a spelling mistake and typed in "email@example.com" instead of "firstname.lastname@example.org".
Unfortunately, most mails that you catch will be spam. If you decide to use the catch-all feature, we recommend that you create a separate account for this on your own domain, and periodically check if you have caught any emails that you want to keep.
Set up a catch-all address
- Log in to the One.com control panel.
- Click on the Email tile to open Mail Administration.
- Scroll to Catch-all address.
- Select the option for "Use the following 'catch-all' address" and type in the email address that should become your catch-all address.
- Click Save.