If during compose on the Mac, your email addresses auto-complete with the last name first, here are some things you can do to correct this issue:
Quit Postbox, go into the Mac Address Book, select Preferences / General, then make sure that "Show first name" has "Before last name" selected. Restart Postbox.
If the above step did not work, then try these steps:
- Quit Postbox.
- Within the Mac Address Book, select "All Contacts," select any name in the Name column, and then choose "Select All" from the Edit menu. All of your contacts should now be selected (but make sure that you don't have anything in the search box).
- Under the Card menu, select "Reorder Last Name Before First," then from the Card menu select "Reorder First Name Before Last."
- Within the Mac Address Book, select Preferences / General, then make sure that "Show first name" has "Before last name" selected. Note: you may also wish to Sort by: Last Name.
- Start Postbox.