## How can I delete multiple contacts at once from my address book? 
To delete contacts in address book:
1. In the left menu (in sidebar) go to `Address book->All contacts`
2. Select the contacts you want to delete and check them
3. Click button `Delete contacts` above the contact list
4. A warning will appear (WARNING! The contacts will be permanently deleted from the address book and all groups)
5. Click `Yes`