Set up Klaviyo API key
Visit your Klaviyo account settings API Keys and create a Private API Key for Back in Stock as shown in the image below.
API Key Scopes
Please follow the following steps as numerated in the image below:
- Name your API Key.
- Select "Custom Key" from the Select Access Level section.
- Select "Full Access" from the List row.
- Select "Full Access" from the Profiles row.
- Select "Full Access" from the Segments row.
- Select "Full Access" from the Subscriptions row.
- Save your changes and copy the generated API Key from the next screen
Setting your List for single opt-in
To set your list for single opt-in, visit your Klaviyo account settings Lists and select the list you want to use for single opt-in. Click on the list and select the "Settings" tab, then in "Consent". Scroll down to the "Opt-in process" section and select "Single Opt-in" as shown in the image below.
Important: Klaviyo will just discard the subscriber if the list is not set for single opt-in.