Hi rob_pop,
Welcome to Apple Support Communities!
We understand that you'd like to set up your email to be forwarded to a separate inbox for each address.
In your Hide My Email Preferences, you can choose the email address you want email forwarded to. Check this out: Use Hide My Email on Mac - Apple Support
Manage addresses created with Hide My Email
With Hide My Email, you can create email addresses whenever you need one on a website. Your addresses are available in Safari on your Mac and other devices signed in with your Apple ID.
In Hide My Email preferences, you can copy an address, change labels, create new addresses, deactivate or delete addresses, and select the personal email address you want email forwarded to.
1. On your Mac, choose Apple menu > System Preferences, click Apple ID , then select iCloud in the sidebar.
2. Next to Hide My Email, click Options.
If requested, enter your Apple ID password and click Continue.
3. When the Hide My Email window appears, do any of the following:
• Copy an email address created with Hide My Email to paste into a web form or application: Select an address on the left, then click Copy. Make Safari or another browser or internet app active, then paste email address into the email account field.
• Create an email address: Click the Add button , enter a label name and note, then click Continue.
• Edit an email address label: Select an address on the left, click Edit, make changes to the label, then click Done.
• Edit an email address note: Select an address on the left, scroll in the list on the right until the Note option appears, click Edit, enter a note, then click Done.
• Deactivate an email address created with Hide My Email: Select an address on the left, scroll in the list on the right until the Deactivate Email Address button appears, click Deactivate Email Address, then click Deactivate.
• Reactivate an inactive email address: Beside Inactive Addresses, click Options. Select an inactive address in the list on the left, click Reactivate Address, click Done, then click Reactivate.
• Delete an inactive email address: Beside Inactive Addresses, click Options. Select an inactive address in the list on the left, click Delete Address, click Done, then click Delete.
• Choose which personal email address to forward to: If you have more than one personal email address, click Options, select the address that Hide My Email should forward mail to, then click Done.
4. Click Done.
You can learn more about Hide My Email here: What is Hide My Email? - Apple Support
We hope this helps.
Cheers!