It is mandatory in order to forward a lot of mails to one master-mail/ inbox.
A catchall email or domain refers to an email system setup where all emails sent to any address at a particular domain are directed to a single email inbox. This means that if someone sends an email to any address under your domain, whether it's a specific address (like info@yourdomain.com) or a random string (like randomstring@yourdomain.com), the email will be received in the catchall inbox.
For example, if your domain is "example.com" and you have a catchall email set up, then emails sent to any address ending in "@example.com" will be received, regardless of whether that specific email address has been explicitly created or not.
We linked an example article of how to setup a catchall
