Apple Relay Registration

I was wondering if anyone could assist with the following query.

Apple's Private Relay functionality requires companies to register all email-sending subdomains for the service to function properly. With 26 markets and 3 subdomains per market for one department, and another department with around 20 markets and even more subdomains, the limit of 100 sending domains is exceeded.

As a result, we’re unable to register all the domains currently being used to send emails to our customers.

Does any have any recommendations to overcome this?

Apple Relay Registration
 
 
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