USPS PMB CMRA Commercial Mail Receiving Agency Mailing Address Rules
What is Changing for CMRA PMB Mailboxes
If you own a private mailbox (non PO box) you will be required to update your mailing address similar to the below example template.
300 West East Street
Ste XXX PMB XXX (Or # XXX)
Chicago, IL 60606
For a list of mailing abbreviations including STE, go here.
If you receive mail addressed differently than above, it will be returned to sender. Contact your mailing party directly to make the needed changes now.