Thanks to everyone in advance -

I received the below email from klaviyo - I am wondering if I am required to update our backend/restapi integration considering it uses a private key?

We use the PHP klaviyo library and use the track() method across our system.

Thanks

Sam

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Hi there,

I am reaching out to you because of an upcoming API change that we believe will impact how you are passing certain profile updates to Klaviyo.

What’s Changing

After June 13th, our Identify API will no longer support making updates to an existing profile’s unique identifiers (email address, phone number, and external id). Now, to make these profile  updates, you will need to utilize Klaviyo’s Profiles API, which requires using an account’s Private API Key.

Why

In order to prevent potential abuse, we will require the use of a Private API Key to update profile identifiers like email address and phone number using our Profiles API.

Action Required

Over the last 90 days, we’ve observed profile identifier updates in your account occurring using our Identify API. Before June 13th 2022, we ask that you migrate to using our server-side Profiles API for these updates following this guide:  Update profile identifiers via API

If you are unsure how these profile updates are occurring, it is possible they are being made by a third-party application. Klaviyo has already notified all of our technology and agency partners regarding these upcoming API changes so that supported integrations can be updated appropriately. If you have any questions or concerns, please review our F.A.Q. or respond to this email.

Best,

Klaviyo Growth Success