Catch-All provides ProtonMail Custom Domain users the option to receive all mail sent to their domain, even if it was sent to an email address that has not been setup within their account.
- Ensure your have completed all of the steps to setup your custom domain and addresses.
- In the Domains tab within the Settings of your account, you will see all the addresses of the account listed.
- To enable Catch-All, check the box next to the address. All mail sent to your domain that does not match an address in your account will now be delivered to this selected address.
If you do not have Catch-All enabled and a sender tries to send a message to an incorrect address, they will receive a bounce back message informing them that the address they tried sending to does not exist within that domain.
Your message wasn't delivered to firstname.lastname@example.org because the address couldn't be found. Check for typos or unnecessary spaces and try again.
Tip: To ensure you do not clutter inboxes, we recommend creating a dedicated address (i.e. email@example.com or firstname.lastname@example.org) within your domain to deliver all Catch-All messages to.