To successfully sync subscriber data from Notify Me to Klaviyo, your private API key must include the correct permissions. Specifically, it must have the profiles:write scope. Without this, Notify Me cannot create or update contacts in your Klaviyo account.
Why is this important?
Notify Me uses the Klaviyo API to push new subscribers to your Klaviyo account. This enables automated flows, list segmentation, and other contact-based functionality. If your API key does not have permission to write to the Profiles object, contact syncing will fail and your integration will not function as expected.
What happens if the required permission is missing?
If your API key does not include the profiles:write scope:
New subscribers from Notify Me will not appear in Klaviyo
Automations, segments, and lists that depend on new contacts will not trigger
You may see the following error message:
"Your API key is missing required scopes: profiles:write"
The Notify Me to Klaviyo integration will appear to be connected but will not sync contacts
How to update your Klaviyo API key
You can either create a new Full Access API key or a Custom Key with the required scope.
Option 1: Create a Full Access API key
Go to Klaviyo > Account > Settings > API Keys
Click Create Private API Key
Choose Full Access Key
Name your key (e.g. "Notify Me integration")
Click Create
Reconnect your Klaviyo integration in Notify Me using the new key
Option 2: Create a Custom API key with Profiles → Full Access
Go to Klaviyo > Account > Settings > API Keys
Click Create Private API Key
Choose Custom Key
Under the Profiles section, set permission to Full Access
Save your key
Reconnect your Klaviyo integration in Notify Me using the new key
Need help?
If your integration still fails after updating your API key, contact our 24/7 support team.