How to delete all contacts from Yahoo Mail account?

Hi,

Unfortunately, there's no way to delete all your contacts at once on Yahoo Mail. Try linking your account to another email service like Gmail, to see if you can manage your contacts there.

Alternatively, to make mass deletion a little less difficult, go to https://mail.yahoo.com/b/contacts and keep clicking on the trash icon to delete as many contacts as you can. There's no confirmation message or additional steps - as soon as you click the trash, the contact is deleted.

If you go with the second method, I suggest you try deleting them in several times. For example, each time you access your inbox, delete some contacts, then continue another time.

Good luck