Hello Bar had recently added Klaviyo to our list of direct integrations so getting your contacts synced to Klaviyo is now made so much easier.
3) Go to your Klaviyo dashboard and click your username at the top right to show the dropdown from which you select "Account".
4) Under "Settings" select "API key".
5) Copy the "Private API"key.
6) Paste the API key in Hello Bar then hit "Connect".
7) Select your preferred Contact list within Klaviyo that you want to sync to Hello Bar then hit "Done".
8) And you're all set!