Using Custom Domain with iCloud Mail

Looks like no one cares about this post, including Apple support. I just wanted to update just for the few that might even look at this post. When Apple says that you can use a custom domain with iCloud mail, and that you can add multiple email addresses with that same domain name, that is NOT entirely true, at all. In fact it is very misleading. While you CAN add multiple email addresses to that custom domain, ALL of the emails will run through the primary apple account holder. After getting no help from a superior apple customer service rep, and only one reply on this message board, everyone's go to answer was "Forward the emails to your wife's address." I did that. She can get the emails to her custom domain email address through a forwarding process. HOWEVER - she cannot send emails FROM her custom domain email. There is not a way to do it, period. Apple fails to fully explain this and it has cost my wife and I a lot of time figuring that out....that it is impossible to have multiple custom domain email addresses that work fully both sending and receiving. What is the point of having a custom domain email address if you can NEVER send an email FROM that address??? Obviously I am extremely unhappy and disappointed in Apple. We are already paying for iCloud storage and so wanted to migrate all of our custom email over to them - but they've made it too difficult to work with - so we'll have to use another server.

That is not true. Instructions for adding multiple users to the same custom domain are found here.

Add an email domain you already own to iCloud Mail on iCloud.com - Apple Support (CA)