Clean the address book
PLUS
You can use the import/export functionality to clean your address book, i.e. remove duplicates, outdated addresses, etc.
Go to > or .
Search the address book without using search values, which will retrieve all senders/receivers in your address book.
Click .
Edit the file in, for example, Microsoft Excel.
Go to > or .
Search the address book without using search values.
Click .
Warning
You remove the entire address book and it can not be undone. Make sure that you have a correct file to import.
Click to import your updated address book file.