Please create a verify address button, similar to the Guidestar button.  This button will connect you to USPS.com address/zip code look up.  It will populate the address with the info you have in the Profile or Grantee page.  Then it will check USPS database to verify it is a

1. valid address if not

2. give you correct way the address is to be written - per USPS guidelines.  

Everyone in the US would benefit from the button to view and verify correct addresses.