Wab is the file containing the address book of Windows. It can contain as many addresses as you wish depending on your hard disk capacity. In order not to type one by one these e-mails when using it, it would be better to use WabMail. It is a simple tool for retrieving quickly the e-mail addresses from WAB. Even if it can export a list of file delimited by commas, the removal of the commas takes time if you only need the list. As WabMail will detect automatically your default address book, just open it to display your list of e-mail addresses by line which can be copied to create a white list of anti-spam, mailing list or used for other purposes.