To use PersonalizedEmails as a non-admin user follow the steps below:
1. Login as the non-admin user.
2. Go to "C:\Program Files\Addins4Outlook\PersonalizedEmails 4Outlook" folder
3. Double click on "PersonalizedEmails_User.reg" file
4. Click Yes
5. Click OK
This should allow a non-admin user to use PersonalizedEmails.