I have created 4 email accounts using my own domain (@example.com). *** Email address is removed for privacy *** is my main account. *** Email address is removed for privacy ***, *** Email address is removed for privacy ***, and *** Email address is removed for privacy *** are all being forwarded to *** Email address is removed for privacy *** (since I can't use a catch-all), and each are divided into separate folders as they come through.  The phone verification system won't let me verify and forward this many email addresses the same time which is a problem, but it's not the problem I'm requesting to resolve because there are so many other problems with my experience thus far.

My BIGGEST issue is that when I send an email to *** Email address is removed for privacy *** and *** Email address is removed for privacy ***, I only receive the email in *** Email address is removed for privacy *** folder, and it is left out of the inbox of *** Email address is removed for privacy *** entirely. This also happens when *** Email address is removed for privacy *** is in the cc-line. 

The only way I can receive an email in the inbox of *** Email address is removed for privacy *** is if *** Email address is removed for privacy *** is the only recipient of that email, or if none of the other email addresses @example.com are in the "to" line. What is going on and how do I ensure that a copy stays in *** Email address is removed for privacy ***?