If you want to delete all of your Gmail contacts, there are a few different ways to go about it. The first way is to use the Gmail interface. To do this, open up Gmail and click on the three lines in the top left corner of the screen. From here, select Settings and then Accounts. Under “Accounts,” select your email account (in this case, Gmail) and then click on the Contacts tab. On the Contacts tab, select all of your contacts and then click on the trash can icon next to their names. The second way to delete your Gmail contacts is to use a third-party tool. One such tool is Contact Deletion for Gmail (www.contact-deletion-for-gmail.com). This tool allows you to delete all of your contacts from within Gmail itself without having to go through the Accounts settings page or use any other third-party tools. whichever method you choose, be sure to back up your contact information before deleting them so that you can restore them if necessary ..