You can use the import/export function to clean your address book, that is, remove duplicates, outdated addresses, etc.

1. Go to Maintenance > Senders or Maintenance > Receivers.
   
   
2. Search the address book without using search values, which will retrieve all senders/receivers in your address book.
   
   
3. Click Export.
   
   
4. Edit the file in, for example, Microsoft Excel.
   
   
5. Go to Maintenance > Senders or Maintenance > Receivers.
   
   
6. Search the address book without using search values.
   
   
7. Click Delete. Important: You remove the entire address book and it can not be undone. Make sure that you have a correct file to import.
   
   
8. Click Import to import your updated address book file.