Email Forwarders to Mailbox

I have a CSV file of email aliases that don't require mailboxes that need to forward email to my mailbox.

For example when I signup for newsletters I use an email alias to protect my real email address.

For example: 'newsletter@domain.com' should forward to 'me@domain.com'

How should I structure my CSV file and what commands do I have to run in PowerShell to set these up?

Thanks in advance